Warbler and sparrow nocturnal flight call composition | Eastern North America Transect
American Redstart Black-and-white Warbler Black-throated Blue Warbler Cape May Warbler Chipping Sparrow Common Yellowthroat Chestnut-sided Warbler Hooded Warbler Indigo Bunting Lincoln's Swamp complex Mourning Warbler Northern Parula Ovenbird Palm Warbler Savannah Sparrow Wilson's Warbler White-crowned Sparrow White-throated Sparrow "Zeep" complex" "Double up" complex Total warbler and sparrow flight calls