红喉姬鹟 Taiga flycatcher Ficedula albicilla
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Ficedula albicilla   Ficedula parva              
秋天 AUTUMN
老鸟 老鸟
Adult Adult
Age 年龄
老鸟: xxxxxxxxxxxxxx
第一年龄: xxxxxxxxxxxxxxxx
Adult: Greater coverts uniform without buff tips. Primary coverts rounded. Tail-feathers broad and rounded.
First year: Greater coverts with buff tips. Tail-feathers pointed.
第一年龄 第一年龄 第一年龄
First year First year First year
春天 SPRING
老鸟雌的 老鸟 老鸟 和 第二年龄 
Adult female Adult Adult and second year
Age 年龄
老鸟: xxxxxxxxxxxxxxxxxxxx
第二年龄: xxxxxxxxxxxxxxxxx
Adult: Greater coverts uniform without buff tips. Primary coverts rounded. Tail-feathers broad and rounded. 
Second year: Buff tips on greater coverts still present, worn. Primary coverts pointed.
第二年龄雄的
Second year male