| י136) בז ערב | ||||||||||
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:בז ערב . הזכר אפור כהה, רגליו ושתו ערמוניים . מקורו, טבעת העין ורגליו בצבע אדום עז הנקבה נבדלת מבז העצים בצבע החלודה . שעל עורפה וקודקודה והחסר על ירכיה, רגליה אדומות . המתבגר דומה לבז העצים המתבגר . מרבה לרפרף במקום אחד ולגלוש . בית גידולו שטחים פתוחים עם מעט עצים, ערבות וסוונות . בארץ עובר אורח מצוי ... נפק לשכור בזאי ... סנהדרין צ"ה א | ||||||||||
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Subspecies and Distribution.
Falco vespertinus E Europe from Estonia and Hungary, through NC Asia to China. Winters in Africa from Angola, Namibia to South Africa, through Botswana to Zimbabwe and Zambia. םםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםם םםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםם םםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםםם | ||||||||||
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Descriptive notes.
30 cm, 130-200 g wingspan 65-75 cm. Mostly grey, contrasting with chestnut lower belly, undertail coverts and thighs. Legs, cere and eye-ring red. Female very different, with rusty orange underparts, upperparts and tail blue grey with black transversal bands. Head pale with rusty crown and blackish eye patch and slight moustache, bare parts orange. Male differs from that of F. amurensis by grey underwing coverts, paler crown and mantle, and darker tail and underparts. Female quite different from that of F. amurensis. Juvenile similar to that of F. subbuteo, but different build. Habitat. Usually open areas or moderately wooded terrains, with low or herbaceous vegetation, steppe, pastures, semi-desert also in villages towns and cities. From sea-level to above tree-line in mountains. Normally sites on which to perch, rock faces, trees, telegraph poles etc'. Food and Feeding. Mainly insects, grasshoppers, crickets and locusts, also variety of invertebret, mice, shrews, voles lizards and fledglings of small birds. Most active around dawn and dusk. Hunts with fairly low flight often over rivers, capturing insects. Uses hovering flight to detect prey on ground. Breeding May, solitary or colonial. Occupies old nests of corvids or raptors, usually in upper part of tree sometimes in cliffs or tree holes. 3-4 eggs, incubation 27 days, by both adults. Male brings food for chicks, as does female in later stages. Chicks have firs down white and second down greyis white. Sexual maturity in ferst year. Movements. Migratory, travelling great distances between Palearctic breeding areas and S African winter quarters. Migrates over broad fronts across Mediterranean (up t0 5700 birds couted in autumn in Israel). Stays in winter quarters mainly between Nov and late Feb, reaches breeding areas from mid Apr-May most birds leaving in Sep. Status and Conservation. Not globally threatened. Marked decline, particularly in S of breeding range, probably due, to pesticide use. Israel. In Israel subspecies Falco vespertinus. Fairly common autumn passage migrant over northern and western parts. |
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