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Thursday, 23 July 2015

Short-eared owl (Asio flammeus) (Pontoppidan, 1763) Βαλτόμπουφος - Cyprus

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 - Αρπαχτικά πουλιά της Κύπρου


Οι 5 παρεξηγημένες κουκουβάγιες της Κύπρου - pics & vids - - Του Γιώργου Κωνσταντίνου - Εφημερίδα πολίτης 29/10/2017


The short-eared owl (Asio flammeus) is a species of typical owl (family Strigidae). Owls belonging to genus Asio are known as the eared owls, as they have tufts of feathers resembling mammalian ears. These "ear" tufts may or may not be visible. Asio flammeus will display its tufts when in a defensive pose. However, its very short tufts are usually not visible. The short-eared owl is found in open country and grasslands. The word flammeus is Latin for "flaming, or the color of fire"
The short-eared owl is a medium-sized owl measuring 34–43 cm (13–17 in) in length and weighing 206–475 g (7.3–16.8 oz).[4] It has large eyes, a big head, a short neck, and broad wings. Its bill is short, strong, hooked and black. Its plumage is mottled tawny to brown with a barred tail and wings. The upper breast is significantly streaked. Its flight is characteristically floppy due to its irregular wingbeats. The short-eared owl may also be described as "moth or bat-like" in flight.[6] Wingspans range from 85 to 110 cm (33 to 43 in). Females are slightly larger than males. The yellow-orange eyes of A. flammeus are exaggerated by black rings encircling each eye, giving the appearance of them wearing mascara, and large, whitish disks of plumage surrounding the eyes like a mask
The short-eared owl occurs on all continents except Antarctica and Australia; thus it has one of the most widespread distributions of any bird. A. flammeus breeds in EuropeAsiaNorth and South America, the CaribbeanHawaii and the Galápagos Islands. It is partially migratory, moving south in winter from the northern parts of its range. The short-eared owl is known to relocate to areas of higher rodent populations. It will also wander nomadically in search of better food supplies during years when vole populations are low. 
Hunting occurs mostly at night, but this owl is known to be diurnal and crepuscular as well. Its daylight hunting seems to coincide with the high-activity periods of voles, its preferred prey. It tends to fly only feet above the ground in open fields and grasslands until swooping down upon its prey feet-first. Several owls may hunt over the same open area. Its food consists mainly of rodents, especially voles, but it will eat other small mammals such as miceground squirrelsshrewsratsbatsmuskrats and moles. It will also occasionally predate smaller birds, especially when near sea-coasts and adjacent wetlands at which time they attack shorebirdsterns and small gullsand seabirds with semi-regularity. Avian prey is more infrequently preyed on inland and centers on passerines such as larksicterids,starlingstyrant flycatchers and pipitsInsects supplement the diet and short-eared owls may prey on roachesgrasshoppersbeetles,katydids and caterpillars. Competition can be fierce in North America with the northern harrier, with which the owl shares similar habitat and prey preferences. Both species will readily harass the other when prey is caught.
Because of the high pH in the stomach of owls they have a reduced ability to digest bone and other hard parts, they eject pellets containing the remains of their prey
Short-eared owls have a scratchy bark-like call. Raspy waowk, waowk, waowk or toot-toot-toot-toot-toot sounds are common. A loudeeee-yerp is also heard on breeding grounds. However, short-eared owls are silent on the wintering grounds. From Wikipedia, the free encyclopedia

Ο βαλτόμπουφος, ή μέτριος μπούφος (είδος Asio flammeus, αγγλ. short-eared owl, γαλλ. hibou des marais), μήκους 40 περίπου εκατοστομέτρων, με στρογγυλό κεφάλι και μόλις ορατούς θυσάνους στα αυτιά, είναι μεταξύ των πιο διαδεδομένων Γλαυκόμορφων πουλιών στην Αμερική, από την Αρκτική και την Βόρεια Εύκρατη ζώνη ως την Χαβάη και την Νότια Αμερική και μεταναστεύει προς τα νότια. Είναι καφέ επάνω με άσπρες κηλίδες, ανοιχτόχρωμος κάτω με ραβδώσεις στο στήθος. Προτιμά τις ανοιχτές υγρές περιοχές και συχνά γίνεται αντιληπτός κατά την ημέρα. Αποδημητικό, τρέφεται με ποντίκια, πουλιά, Έντομα καιβατράχια και φωλιάζει στο έδαφος, συχνά σε ομάδες. Ζει σε ανοιχτά ελώδη εδάφη.
Από τη Βικιπαίδεια, την ελεύθερη εγκυκλοπαίδεια

Photos Mantria, 19/3/2014 by George Konstantinou





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