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2015-05-12
Zhitomir oblast. Novgorod-Volonsky raion |
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The Wood Warbler is slightly larger than Willow Warbler; has more dense constitution, longer wings and shorter tail. It is distinguished from other Leaf Warbler by the bright coloring; it has green upperparts especially rump and uppertail; yellow supercilium, chin, throat (often yellow extended to upper breast and flanks); breast (or only under breast), abdomen and undertail are clear white. The flight feathers have yellow edges; these edges are very bright, yellowish-white or pale-yellow on tertials. There are not wing bars. Legs are brownish-buffy or olive-buffy, light. Juveniles in first plumage are similar on adults, but have more loose plumage; upperparts are more brownish; yellow on breast is less. The autumn juveniles are more yellow above but basically resemble adults. The wing form: 1st primary is narrow, shorter or equal than coverts (but in case of longer that not more than on 1 mm); 2nd primary is longer than 5th one. Weight 7-13 г, length 12-16, wing 6,8-8,1, wingspan 20-24 cm.
В.К.Рябицев. "Птицы Урала, Приуралья и Западной Сибири". Екатеринбург, Изд-во Уральского университета, 2000.