|
The yellow-bellied flycatcher (''Empidonax flaviventris'') is a small insect-eating bird of the tyrant flycatcher family. Adults have greenish upperparts and yellowish underparts (especially on the throat), with a dusky wash on the chest. They have a white or yellow eye ring that lacks the teardrop projection of Pacific-slope (''E. difficilis'') or cordilleran (''E. occidentalis'') flycatchers, white or yellowish wing bars that contrast strongly against the black wings, a broad, flat bill, and a relatively short tail when compared to other members of the genus. The upper mandible of the bill is dark, while the lower mandible is orange-pink. Their breeding habitat is wet northern woods, especially spruce bogs, across Canada and the northeastern United States. They make a cup nest in sphagnum moss on or near the ground. These birds migrate to southern Mexico and Central America. Yellow-bellied flycatchers wait on a perch low or in the middle of a tree and fly out to catch insects in flight, sometimes hovering over foliage. They sometimes eat berries or seeds. The yellow-bellied flycatcher's song can be transcribed as a rough, descending "TSE-berk," which can be similar to the more common least flycatcher's snappier, more evenly pitched "che-bek." The three primary call notes of yellow-bellied flycatcher are a clear, ascending "chu-wee," a sharp, gruff "peekk", and a soft, descending "pyu." ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Yellow-bellied flycatcher」の詳細全文を読む スポンサード リンク
|