The rich and rare biodiversity in Cyprus. The Cyprus biodiversity includes 1908 plants, 780 seashells, 250 fishes, more than 7.000 insects, 410 birds including migratory, 31 mammals, 9 snakes, 11 lizards,three amphibians, 120 land snails, fungi estimated 5-8 thousandand and three turtles.These numbers continually increase as a result of researc. Also see All about Cyprus.
From George Konstantinou. Email -
fanigeorge@hotmail.com -
Το υλικό της ιστοσελίδας αποτελεί πνευματική ιδιοκτησία.
Lestes macrostigma is a species of damselfly of the family Lestidae, the spreadwings. It is known by the common name dark spreadwing. It is native to much of southern Europe, its distribution extending into western Asia.
Description
This species is up to 48 millimeters long. It is similar to other common Lestes species but it is darker in color with more blue pruinescence. The pterostigmata are large and black.
Distribution
This species has a wide distribution extending from the western coastlines of Europe into Central Asia and the Middle East. Much of its European range is in the Mediterranean. Its distribution is fragmented. It is more abundant in the eastern parts of its range, but abundance varies according to climate and weather. In some areas it is common and in others it is rare and sometimes endangered.
It is most common around brackish waters, like coastal estuaries and salty inland lakes.
Biology
This species has often been noted to lay its eggs on saltmarsh bulrush (Bolboschoenus maritimus). It will also utilize sea bulrush (Juncus maritimus) and common clubrush (Schoenoplectus lacustris).
After mating, the female usually seeks oviposition sites with the male still attached to her. She then lays a line of eggs in the fibers of the aquatic plant. The ovipositor has a cutting implement and sensory setae.From Wikipedia, the free encyclopedia. https://en.wikipedia.org/wiki/Lestes_macrostigma
Loboptera is a genus of mostly Palaearctic cockroaches erected by Carl Brunner von Wattenwyl in 1865; it appears to be currently placed in the subfamily Blattellinae. The recorded distribution (probably incomplete) for species includes: mainland Europe (not the British Isles or Scandinavia), North Africa, Cameroun, the Middle East through to central Asia
Episyrphus balteatus, sometimes called the marmalade hoverfly, is a relatively small hoverfly (9–12 mm) of the Syrphidae family, widespread throughout the Palaearctic region, which covers Europe, North Asia, and North Africa. It is considered the most abundant native hoverfly in Central Europe.
Morphology
The upper side of the abdomen is patterned with orange and black bands. Its color patterns may appear wasp-like to other animals, such as birds, protecting it from predation - an example of Batesian mimicry. The percentage of black and yellow color can change between individuals, and it is modulated by the length and temperature of the pupal period. Females tend to be darker than males.
Two further identification characters are the presence of secondary black bands on the third and fourth dorsal plates and faint greyish longitudinal stripes on the thorax. As in most other hoverflies, males can be easily identified by their holoptic eyes, i.e., left and right compound eyes touching at the top of their heads
Habitat and life cycle
Episyrphus balteatus can be found throughout the year in various habitats, including urban gardens, visiting flowers for pollen and nectar. They often form dense migratory swarms, which may cause panic among people for their resemblance to wasps. It is among the very few species of flies capable of crushing pollen grains and feeding on them In controlled experiments, adults of E. balteatus tend to prefer smaller, yellow flowers, with high concentrations of nectar.[ Adult E. balteatus, while not as efficient as honey bees, are significant and abundant pollinators.
The larva is terrestrial and feeds on aphids - for this reason, E. balteatus is considered one of the main natural enemies of cereal aphids. In the wild, an E. balteatus larva can consume up to about 400 aphids before pupating.
Migration
E. balteatus is a partially migratory species - - it is one of the migrating hoverflies along other common species such as Eupeodes corollae. Some individuals migrate from northern Europe to southern Europe and north Africa in autumn, seeking warmer climates to spend the winter, while other adult females can overwinter. It is uncertain if this behavioural difference is controlled genetically; a study in 2013 found no genetic difference between overwintering and migrating populations, while a study in 2018 found evidence of heritability.Transcriptomic analysis discovered that at least 1543 genes are differentially expressed between overwintering and migrating individuals. These genes are involved in numerous physiological functions of the hoverfly, such as "metabolism, muscle structure and function, hormonal regulation, immunity, stress resistance, flight and feeding behaviour, longevity, reproductive diapause and sensory perception".
When migrating, E. balteatus individuals tend to fly below 300 meters of altitude, but many can go beyond 750 m and a few up to almost 1000 meters. They are capable of selecting favourable winds, selecting airstreams above 150 meters and using behavioural tactics to fly southward despite unfavourable winds. This means the flies must have an internal compass (probably a solar compass as in other insects) able to locate the right direction, and a way to detect wind direction.
Given the short lifespan of the insect, it has been suggested that its migration is unidirectional: a population moves south during a single season, and then slowly comes back north during summer across multiple generations. In May 2022 however, tens of thousands of dead E. balteatus were found stranded on a beach in southern France, probably caught by winds during flight, suggesting a massive spring migratory event. E. balteatus migrating north from continental Europe to southern Britain have been detected in May and June, leaving back south between August and September. The autumnal migration however involves many more individuals.
Overwintering females are often found in sheltered locations at the south-facing edges of forests. In summer they tend to move towards the north-facing edges.
The genome of Episyrphus balteatus has been sequenced in 2022 and published in 2023
From Wikipedia, the free encyclopedia https://en.wikipedia.org/wiki/Episyrphus_balteatus
Scopula imitaria, the small blood-vein, is a moth of the family Geometridae. It was first described by Jacob Hübner in 1799 and it is found throughout Europe and in North Africa.
Description
The wingspan is 12–26 mm. (1st generation); the next generation is typically much smaller and reaches no more than 18 mm. The forewing leading edge (costa) forms an acute angle with the outer edge forming a sharp point. The hindwings also come to a sharp angle in the middle of the outer edge (a "tail"). The pattern and colouring are variable. The wings are reddish, yellowish or orange to light brown. The lines and marginal line are almost always clear, but fine. The median crossline is clearly developed and inclined slightly diagonally to the inner and outer crossline. It is slightly curved and very weakly wavy and often accompanied by a distal facing shadow. The interior and exterior crosslines are slightly wavy (more clearly than the median line). The hindwings have the pattern, however they often lack the inner crossline. The outer cross line shows a pointed bulge outwards, which follows the "tail" of the perimeter. Discal flecks are only sometimes present or weak, They are more pronounced on the hindwing. The discal fleck of the hindwings sits on the outside of the medium line or in the "shadow". On the forewing it is basal to the median line.
Photos Potamia by George Konstantinou
The egg is elongate-ovate, strongly flattened at its broader end, with the longitudinal ribbing strong, its colouration is whitish yellow, becoming orange as in the allied species. The larva is extremely long and slender, the skin transversely and very irregularly wrinkled. The head is small and rounded. The body is pale ochreous with a distinct brown dorsal line, often partly broken up into spots anteriorly, but becoming darker and more continuous posteriorly; ventral surface mixed with fuscous. The spiracles are black. Varieties occur in which the ground-colour is more grey, or more tinged with greenish or with red-brown, but it is always of some pale shade. The pupa is golden brown, with ochreous yellow wing-cases.
Distribution
The species is mostly southern European (from Portugal to the Balkan peninsula and Greece) as well as North African (from Morocco to Libya). It ranges in the east to Asia Minor and Syria. It also occurs in almost the whole of France to the south of the British Isles and Denmark. Also specimens have been caught in southern Germany. There are small, isolated occurrences in western Ukraine. In Germany, there are but so far no secure evidence of an indigenous population. In the Middle East, in southern Turkey, Cyprus, Crete and the Greek islands of the south-east, the nominate S. i. imitaria is replaced by S. i. syriaca Culot, 1918. This form is less clearly has a little less corrugated outer cross line and a less clearly pronounced marginal line. The colour is slightly reddish. The reddish yellow form S. i. syriaca occurs especially on hot, dry areas in the lowlands and hills. It is widespread in the Mediterranean region on sandy or stony soil, the maquis shrubland, evergreen oak forests, olive groves and rocky grassland. In the Alps, S. i. imitaria rises up to 900 m. In Morocco and also in the Mediterranean region it rises up to a height of 1,400 meters. S. i. imitaria is limited to the coastal areas in western France and southern England.
The moth flies in two generations from June to September in western Europe.
Leucania obsoleta, the obscure wainscot, is a moth of the superfamily Noctuoidea. The species was first described by Jacob Hübner in 1803. It is found in Europe.
The length of the forewings is 15–18 mm. The moth flies in one generation from early May to late July
he larvae feed on Phragmites species.
The flight season refers to Belgium and the Netherlands. This may vary in other parts of the range.
Gnophos is a genus in the geometer moth family (Geometridae). A mostly Old World lineage, it is abundant in the Palearctic, with some North American species as well; in Europe six species are recorded. This genus has about 120 known species altogether in several recognized subgenera, with new ones still being discovered occasionally.
This is the type genus of the tribe Gnophini in subfamily Ennominae, which some authors include in the Boarmiini.
Phaiogramma etruscaria is a species of moth of the family Geometridae.
Description
Phaiogramma etruscaria has a wingspan reaching 17.7-19.3 mm in males, 20-23.3 mm in the females. Wings are light green, with clearly visible white antemedial lines and small marbled striations. Hind tibia bear only terminal spurs in males, two pairs of spurs in females. Antennae are ciliate in males, while in females they are filiform. Adults are on wing from May to June. There is one generation per year. The pupae overwinter.
The larvae are polyphagous and feed on various Apiaceae (Anethum graveolens, Bupleurum, Foeniculum vulgare, Daucus, Ferula, Peucedanum) and on Thapsus, Lotus, Clematis and Rosmarinus.
Distribution
It is found from the Mediterranean Sea area of Europe to central Asia. Records include Russia, Italy, France, the Crimea, Turkmenistan, Kyrgyzstan and Kazakhstan.
Habitat
This species inhabits warm scrubs and xerophilous hillsides.
Nomophila noctuella, the rush veneer, is a species of moth of the family Crambidae.
Distribution
This species has a nearly cosmopolitan distribution (Europe, North Africa, Central Asia, Pakistan, North America). In Europe, it is a migratory species, travelling from southern Europe and North Africa to Northern Europe.
Description
The wingspan is 26–32 mm. Forewings are very elongated and narrow. The basic color of the forewings is usually brown, with darker wide eight-shaped and reniform markings in the discal and postdiscal areas. Some dark brown spots are present close to the outer edge and to the apex. The hindwings are whitish with brown veins. The mature larvae are gray green and spotted. They can reach a length of 15–20 millimetres (0.59–0.79 in).
Biology
These moths fly from May to September depending on the location. They are attracted to light, and in Europe they are migratory. There are two to four generations per year.
The larvae feed on Trifolium, clover, Medicago, Polygonum aviculare, wheat, Vaccinium and various other grasses. They pupate in a cocoon amongst the leaves of the host plants or on a stone. The pupa hibernates, From Wikipedia, the free encyclopedia
Zekelita ravalis is a moth of the family Erebidae first described by Gottlieb August Wilhelm Herrich-Schäffer in 1851. It is found in the Near East and Middle East, Kazakhstan, Kirghizia, Pakistan, Afghanistan, Egypt, Bahrain, Cyprus and the Levant.
Antigastra catalaunalis is a species of moth of the family Crambidae. The species was first described by Philogène Auguste Joseph Duponchel in 1833. It is endemic to tropical and subtropical areas (South Asia, Malay Archipelago, Africa), but is also found in other areas due to its migratory nature.
Description
The wingspan is 19–22 mm. The forewings are pale yellow, veins and margins suffused with ferruginous, sometimes almost obscuring ground-colour; lines ferruginous, second strongly curved outwards on upper 2/3 ; small orbicular and discal spot fuscous ; cilia whitish, base dark fuscous. Hindwings are yellow whitish, ferruginous-tinged, termen more ferruginous ; a cloudy grey postmedian costal spot.
The larvae feed on snapdragons (Antirrhinum species), common toadflax (Linaria vulgaris), trumpetbush (Tecoma species), Scrophulariaceae and Pedaliaceae species.From Wikipedia, the free encyclopedia
Hypsopygia costalis, the gold triangle or clover hay moth, is a species of moth of the family Pyralidae. It was described by Johan Christian Fabricius in 1775 and is found in Europe. The wingspan is 16–23 mm. The adult moths fly from May to July, depending on the location. The supposed species H. aurotaenialis is included here pending further study.
The caterpillars feed on dry vegetable matter. They have been found in haystacks or thatching, as well as in chicken (Gallus) and magpie (Pica) nests. The caterpillar is injurious to clover hay, and to other hay when mixed with clover. Its depredations can be prevented by keeping the hay dry and well ventilated, as the insect preferably breeds in moist or matted material such as is to be found in the lower parts of haystacks, where affected hay becomes filled with webbings of the caterpillars and their excrement, rendering it unfit for feeding. A treatment is to burn the webbed material and to thoroughly clean the affected location. From Wikipedia, the free encyclopedia
Της οικογένειας (Σεσιίδες) Sesiidae or clearwing moths (Γέρι 20.6.2006)
family Sesiidae
Chamaesphecia masariformis is a moth of the family Sesiidae. It is found in south-eastern Europe, Turkey, northern Iran, the Middle East, the Caucasus, southern Russia, Uzbekistan and Tajikistan.The wingspan is 21–23 mm. Adults are on wing from May to July. .The larvae feed on Verbascum species (including Verbascum lychnites, Verbascum thapsus and Verbascum nigrum), Scrophularia canina and possibly Astragalus ponticus. From Wikipedia, the free encyclopedia
Liris haemorrhoidalis (Fabricius, 1804) is
a species of square-headed wasp in the family Crabronidae. It is found in the Arabian
Peninsula: Oman ( Guichard 1980; Roche 2007), Oman / United Arab Emirates (
Hamer 1985), Qatar ( Abdu & Shaumar 1985), Saudi Arabia ( Gadallah &
Assery 2004b; Gadallah et al. 2013), United Arab Emirates ( Hamer 1986, 1988;
Gillett & Gillett 2005; Howarth & Gillett 2008; Schmid-Egger 2014).
Extralimital distribution: Widespread in Africa, Cyprus, southern Asia to western India and Sri Lanka.
Katamenes dimidiatus is a species of Hymenoptera in the family Eumenidae.
Katamenes is a genus of potter wasps with species distributed in Europe, Cyprus and Africa. When originally named by Edmund Meade-Waldo, Katemenes was monotypic, containing only K. watsoni, but other species have since been moved from Eumenes to Katamenes
The northern goshawk (/ˈɡɒsˌhɔːk/; Accipiter gentilis) is a species of medium-large bird of prey in the family Accipitridae, a family which also includes other extant diurnal raptors, such as eagles, buzzards and harriers. As a species in the genus Accipiter, the goshawk is often considered a "true hawk". The scientific name is Latin; Accipiter is "hawk", from accipere, "to grasp", and gentilis is "noble" or "gentle" because in the Middle Ages only the nobility were permitted to fly goshawks for falconry.
This species was first described by Linnaeus in the 10th edition of his Systema naturae (1758) as Falco gentilis.
It is a widespread species that inhabits many of the temperate parts of the Northern Hemisphere. The northern goshawk is the only species in the genus Accipiter found in both Eurasia and North America. It may have the second widest distribution of any true member of the family Accipitridae, behind arguably only the golden eagle (Aquila chrysaetos), which has a broader range to the south of Asia than the goshawk. The only other acciptrid species to also range in both North America and Eurasia, according to current opinion, is the more Arctic-restricted rough-legged buzzard (Buteo lagopus) Except in a small portion of southern Asia, it is the only species of "goshawk" in its range and it is thus often referred to, both officially and unofficially, as simply the "goshawk". It is mainly resident, but birds from colder regions migrate south for the winter. In North America, migratory goshawks are often seen migrating south along mountain ridge tops at nearly any time of the fall depending on latitude
Distribution
The northern goshawk has a large circumpolar distribution. In Eurasia, it is found in most areas of Europe excluding Ireland and Iceland. It has a fairly spotty distribution in western Europe (e.g. Great Britain, Spain, France) but is more or less found continuously through the rest of the continent. Their Eurasian distribution sweeps continuously across most of Russia, excluding the fully treeless tundra in the northern stretches, to the western limits of Siberia as far as Anadyr and Kamchatka. In the Eastern Hemisphere, they are found in their southern limits in extreme northwestern Morocco, Corsica and Sardinia, the "toe" of Italy, southern Greece, Turkey, the Caucasus, Sinkiang's Tien Shan, in some parts of Tibet and the Himalayas (India and Nepal), western China and Japan. In winter, northern goshawks may be found rarely as far south as Taif in Saudi Arabia and perhaps Tonkin, Vietnam.
In North America, they are most broadly found in the western United States, including Alaska, and western Canada. Their breeding range in the western contiguous United States largely consists of the wooded foothills of the Rocky Mountains and many other large mountain ranges from Washington to southern California extending east to central Colorado and westernmost Texas. Somewhat discontinuous breeding populations are found in southeastern Arizona and southwestern New Mexico, thence also somewhat spottily into western Mexico down through Sonora and Chihuahua along the Sierra Madre Occidental as far as Jalisco and Guerrero, their worldwide southern limit as a breeding species.
The goshawk continues east through much of Canada as a native species, but is rarer in most of the eastern United States, especially the Midwest where they are not typically found outside the Great Lakes region, where a good-sized breeding population occurs in the northern parts of Minnesota, Illinois, Michigan and somewhat into Ohio; a very small population persists in the extreme northeast corner of North Dakota. They breed also in mountainous areas of New England, New York, central Pennsylvania and northwestern New Jersey, sporadically down to extreme northwestern Maryland and northeastern West Virginia. Vagrants have been reported in Ireland, North Africa (central Morocco, northern Algeria, Tunisia, Libya, Egypt); the Arabian Peninsula (Israel, Jordan, Saudi Arabia), southwest Asia (southern Iran, Pakistan), western India (Gujarat) and on Izu-shoto (south of Japan) and the Commander Islands, and in most of the parts of the United States where they do not breed.
Northern goshawks can be found in both deciduous and coniferous forests. While the species might show strong regional preferences for certain trees, they seem to have no strong overall preferences nor even a preference between deciduous or coniferous trees despite claims to the contrary. More important than the type of trees are the composition of a given tree stand, which should be tall, old-growth with intermediate to heavy canopy coverage (often more than 40%) and minimal density undergrowth, both of which are favorable for hunting conditions. Also, goshawks typically require proximity to openings in which to execute additional hunting. More so than in North America, the goshawks of Eurasia, especially central Europe, may live in fairly urbanized patchworks of small woods, shelter-belts and copses and even use largely isolated trees in central parts of Eurasian cities. Even if they are far more wary of human presence than the Eurasian sparrowhawk, northern goshhawks are known to live in some relatively densely wooded areas of large cities of Central Europe, such as Berlin and Hamburg; it is a relatively new phenomenon that started in the 20th century. Access to waterways and riparian zones of any kind is not uncommon in goshawk home ranges but seems to not be a requirement. Narrow tree-lined riparian zones in otherwise relatively open habitats can provide suitable wintering habitat in the absence of more extensive woodlands. The northern goshawk can be found at almost any altitude, but recently is typically found at high elevations due to a paucity of extensive forests remaining in lowlands across much of its range. Altitudinally, goshawks may live anywhere up to a given mountain range's tree line, which is usually 3,000 m (9,800 ft) in elevation or less. The northern limit of their distribution also coincides with the tree line and here may adapt to dwarf tree communities, often along drainages of the lower tundra. In winter months, the northernmost or high mountain populations move down to warmer forests with lower elevations, often continuing to avoid detection except while migrating. A majority of goshawks around the world remain sedentary throughout the year
Νεαρό έξω από την φωλιά του. Φωτογραφίες στον ποταμό Διάριζο στον εκδρομικό χώρο Κομιτιτζή κοντά στο χωριό Μυλικούρι στις 18/6/2021
Photos Milikouri 18/6/2021by George Konstantinou
Breeding
The northern goshawk is one of the most extensively studied raptors in terms of its breeding habits. Adult goshawks return to their breeding grounds usually between March and April, but locally as early as February. If prey levels remain high, adults may remain on their breeding ground all year. Courtship flights, calls and even nest building has been recorded in Finland exceptionally in September and October right after young dispersed, whereas in most of Fennoscandia, breeding does not commence any earlier than March and even then only when it is a warm spring. Most breeding activity occurs between April and July, exceptionally a month earlier or later. Even in most areas of Alaska, most pairs have produced young by May. Courtship flights typical are above the canopy on sunny, relatively windless days in early spring with the goshawks’ long main tail feathers held together and the undertail coverts spread so wide to give them an appearance of having a short, broad-tail with a long dark strip extending from the center. Display flights not infrequently escalate into an undulating flight, similar to a wood pigeon but with sharper turns and descents, and are sometimes embellished with sky-dives that can cover over 200 m (660 ft). One study found undulating display flights more than three times more often done by males than females. After display flights have concluded, the male typically brings a prepared fresh prey item to the female as part of the courtship. In general, these displays are presumably to show (or reinforce) to the potential mate their health and prowess as breeding partner. Copulation is brief and frequent, ranging up to nearly 520 times per clutch (on average about 10 times a day or 100-300 throughout the season), and may be the male's way of ensuring paternity since he is frequently away gathering food by the time of egg-laying, although extra-pair copulation is extremely rare. Female solicits copulations by facing away from male with drooped wings and flared tail-coverts. The male, wings drooped and tail-coverts flared, drops from a branch to gain momentum, then swoops upward and mounts her back. Both birds usually call while mating Fidelity studies from Europe show that about 80–90% of adult females breed with the same male in consecutive years, whereas up to 96% of males mate with the same female in consecutive years. In California, 72% of males retained relationship with the same mates in consecutive years while 70% of females did the same. Males intruding in Hamburg, Germany territories were in some cases not evicted and ended up mating with the female, with the male of the pair not stopping it. In migratory, northernmost populations, mate retention in consecutive years is low. Males are sometimes killed by females during courtship and encounters can be dangerous especially if he does not bring food to courtship and he often seems nervous withdrawing with a trill at a given chance
Nest characteristics
Nesting areas are indefinite, a nest may be used for several years, also a nest built years prior may be used or an entirely new nest may be constructed. When nest constructing, the pair will often roost together. Males construct most new nests but females may assist somewhat if reinforcing old nests. While the male is building, the female perches in the vicinity, occasionally screaming, sometimes flying to inspect the nest. At other times, the female may take a more active role, or even the primary one, in new nest construction and this is subject to considerable individual variation. For the nesting tree, more than 20 species of conifer have been used including spruce, fir, larch, pine and hemlock. Broadleaf trees used including ash, alder, aspen, beech, birch, elm, hickory, hornbeam, lime, maple (including sycamore), oak, poplar, tamarack, wild cherry and willow. In some areas, the nests may be lined with hard pieces of bark and also with green sprigs of conifers. Often the tallest tree in a given stand is selected as the nest tree and this is often the dominant tree species within the given region and forest. Therefore, hardwood trees are usually used as the nesting tree in the eastern United States while conifers are usually used in the western United States. Most nests are constructed under the canopy or near the main fork of a tree and in North America, averaging nest height ranged from 5.8 m (19 ft) (in the Yukon) to 16.9 m (55 ft) (in New Mexico), elsewhere as in Europe average height is between 9 and 25 m (30 and 82 ft In the dwarf trees of the tundra, nests have been found at only 1 to 2 m (3.3 to 6.6 ft) off the ground, and, in the tundra and elsewhere, very rarely on felled trees, stumps or on the ground. In some studies from North America up to 15% of nests are in dead trees but this is far rarer in Eurasia. More significant than species is the maturity and height of the nesting tree, its structure (which should have ample surface around the main fork) and, perhaps most significantly, little to no understory below it. Multiple studies note the habit of nests being built in forests close to clear-fellings, swamps and heaths, lakes and meadows, roads (especially light-use logging dirt roads), railways and swathes cut along power cables, usually near such openings there'd be prominent boulders, stones or roots of fallen trees or low branches to use as plucking points. Canopy cover averaged between 60 and 96% in Europe. As is typical in widely distributed raptors from temperate-zones, those from cold regions faced south, 65% in Alaska, 54% in Norway and also in high latitudes such as sky-forests of the Arizona Rockies, otherwise usually nests face north and east.
Nests, especially after initial construction, may average between 80 and 120 cm (31 and 47 in) in length and 50 to 70 cm (20 to 28 in) in width, and are around 20 to 25 cm (7.9 to 9.8 in) deep. After many uses, a nest can range up to 160 cm (63 in) across and 120 cm (47 in) in depth and can weigh up to a ton when wet. Northern goshawks may adopt nests of other species, common buzzards contributed 5% of nests used in Schleswig-Holstein, including unusually exposed ones on edges of woods and another 2% were built by common ravens or carrion crows, but 93% were built by the goshawks themselves. While colonizing peri-urban areas in Europe, they may displace Eurasian sparrowhawks not only from their territories but may actually try to use overly small sparrowhawk nests, usually resulting in nest collapse.[9] One nest was used continuously by different pairs for a period of 17 years. A single pair may maintain up to several nests, usually up to two will occur in an area of no more than a few hundred meters. One nest may be used in sequential years, but often an alternate is selected. During an 18-year-study from Germany, many alternate nests were used, 27 pairs had two, 10 had 3, 5 had 4, one had five and one pair had as many as 11. Other regions where pairs had on average two nests were Poland, California and Arizona’s Kaibab Plateau. The extent of use of alternate nests is unknown as well as their benefit, but they may reduce significant levels of parasites and diseases within the nest. In central Europe, the goshawk's nest area can be as small 1 to 2 ha (2.5 to 4.9 acres) of woods and less than 10 hectares are commonplace. Usually only one active nest occurs per 100 ha (250 acres), are they avoid edges as nest sites and occupied nests are seldom less than 600 m (2,000 ft) apart.[clarification needed] The most closely spaced active nests by a separate pair on record was 400 m (1,300 ft) in central Europe, another case of two active nests 200 m (660 ft) apart in Germany was a possible case of polygamy. From Wikipedia, the free encyclopedia
Eggs
Subspecies
Accipiter gentilis albidus
Accipiter gentilis apache
Accipiter gentilis arrigonii
Accipiter gentilis atricapillus
Accipiter gentilis buteoides
Accipiter gentilis fujiyamae
Accipiter gentilis gentilis
Accipiter gentilis laingi
Accipiter gentilis marginatus
Accipiter gentilis schvedowi (eastern goshawk)
Photos Armirolivado 2022 and Marathasa valley 2023 by Constantinos Antoniou
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