ツ彩燕 - Tachycineta bicolor - 飞行中，腹部呈现白色和深蓝色，背景为浅蓝色天空。羽毛细节

树燕栖息在树桩上

双色燕

燕子

树燕掠过水面

树燕在两次飞行间休息

双色燕子喂养幼鸟

双色燕子喂养雏鸟

tree swallow perched on branch against clear blue sky tachycineta bicolor a slender its iridescent green upperparts contrast with

a tree swallow tachycineta bicolor perches on slender branch against clear blue sky it is characterized by its striking black

树燕

树燕在树上

树燕

树燕

tree swallow tachycineta bicolor peeking from wooden nest box out a mounted on trunk the is weathered with visible metal screws

tree swallow resting on branch with iridescent head tilted slightly tachycineta bicolor perched a slender against clear blue sky

tree swallow tachycineta bicolor perched on branch under clear sky tree swallow tachycineta bicolor perched on a slender branch

小鸟 - 树燕

树燕飞行中

双色燕

雄树燕在巢中

双色燕 (Tachycineta bicolor)

线上的树燕

树燕特写

树燕

双色燕子喂养雏鸟

树燕喂养雏鸟

双色燕

双色燕 - Tachycineta bicolor

树燕幼鸟与母亲

树燕

树燕飞行中

树燕栖息在鸟屋上

树燕喂养雏鸟

双色燕子喂养雏鸟

树燕

雄树燕喂养幼鸟

树燕 (Iridoprocne bico)

雏燕子

雄树燕

双色燕 (Tachycineta bicolor)