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2019-02-24
Tudakul |
© Sergey Domashevsky
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On adult male of the Great Grey Shrike the crown, mantle and uppertail are grey (from pale-grey to brownish-grey). The black mask extends from the bill base across the eyes to ear coverts. The flight feathers are black but some of them have white bases forming large or little or divided on two parts speculum. The tail feathers are black with white terminal patches which become broader to the tail-sides. Sometimes two or three outer pairs of tail feathers may be white. The throat, breast, abdomen, flanks and undertail are off-white, grey or brownish-grey; in last case with dark scaly pattern. The adult females are same colored but all tones are dimmer and greyer; underparts always have obvious brownish scaly pattern. Some females (probably old) are not distinguished from males. Juveniles are similar on females but more greyer; the scaly pattern is more expressive not only on underparts but on the head and mantle too. The bill and legs are black, eyes are dark-brown. Weight 54.5-88.6 grams, males - wing 102.0-123.0, tail 105.0-125.0, females – wing 104.0-115.5, tail 105.0-130.0 mm.
"Птицы Казахстана" том 3. "Наука". Алма-Ата, 1970.
