northern waterthrush spring migration in alaska

bobbing ground brown white insects mangrove swamps thickets lake tahoe coniferous forests perching birds loud shy long legs streaked buffy eyebrow parulidae warbler world alaska ground-feeding singing songbird ornithology migrating bird watching wing thrush bird closeup usa spring passerine parkesia noveboracensis perched environment waterthrush outdoors wild wildlife nature beak avian animal