1.
American Bittern & Least Bittern
0:28
2.
Brewer's Blackbird & Red-winged Blackbird
0:54
3.
Rusty Blackbird & Yellow-headed Blackbird
0:41
4.
Eastern Bluebird & Bobolink
0:50
5.
Indigo Bunting & Northern Cardinal
0:55
6.
Grey Catbird & Yellow-breasted Chat
0:37
7.
Black-capped Chickadee & Boreal Chickadee
0:31
8.
Greater Prairie Chicken & American Coot
0:36
9.
Brown-headed Cowbird & Sandhill Crane
0:44
10.
Brown Creeper & White-winged Crossbill
0:39
11.
American Crow & Black billed Cuckoo
0:43
12.
Yellow-billed Cuckoo & Dickcissel
0:30
13.
Mourning Dove & Rock Dove
0:33
14.
Short-billed Dowitcher & Wood Duck
0:27
15.
Bald Eagle & Great Egret
0:35
16.
House Finch & Purple Finch
0:36
17.
Yellow-shafted Flicker & Acadian Flycatcher
0:31
18.
Alder Flycatcher & Great-crested Flycatcher
0:23
19.
Least Flycatcher & Olive-sided Flycatcher
0:24
20.
Willow Flycatcher & Yellow-bellied Flycatcher
0:26
21.
Blue-gray Gnatcatcher & American Goldfinch
0:40
22.
Canada Goose & Northern Goshawk
0:33
23.
Common Grackle & Pied-billed Grebe
0:32
24.
Evening Grosbeak & Rose-breasted Grosbeak
0:41
25.
Ruffed Grouse & Ring-billed Gull
0:54
26.
Broad-winged Hawk & Red-shouldered Hawk
0:28
27.
Red-tailed Hawk & Black-crowned Night Heron
0:31
28.
Green Heron & Ruby-throated Hummingbird
0:22
29.
Blue Jay & Grey Jay
0:44
30.
Dark-eyed Junco & American Kestrel
0:34
31.
Killdeer & Eastern Kingbird
0:43
32.
Belted Kingfisher & Golden-crowned Kinglet
0:32
33.
Ruby-crowned Kinglet & Horned Lark
0:38
34.
Common Loon & Mallard
0:32
35.
Purple Martin & Eastern Meadowlark
0:32
36.
Western Meadowlark & Merlin
0:29
37.
Common Moorhen & Red-breasted Nuthatch
0:31
38.
White-breasted Nuthatch & Baltimore Oriole
0:37
39.
Orchard Oriole & Barred Owl
0:41
40.
Eastern Screech Owl & Great-horned Owl
0:41
41.
Long-eared Owl & Northern Saw-whet Owl
0:27
42.
Eastern Wood Pewee & Ring-necked Pheasant
0:27
43.
Eastern Phoebe & Semipalmated Plover
0:35
44.
Sora Rail & Virginia Rail
0:48
45.
Yellow Rail & Common Raven
0:48
46.
American Robin & Baird's Sandpiper
0:30
47.
Pectoral Sandpiper & Semipalmated Sandpiper
0:25
48.
Spotted Sandpiper & Upland Sandpiper
0:37
49.
Yellow-bellied Sapsucker & Pine Siskin
0:29
50.
Common Snipe & Sparrow Tree American
0:32
51.
Chipping Sparrow & Clay-colored Sparrow
0:37
52.
Field Sparrow & Grasshopper Sparrow
0:53
53.
Henslow's Sparrow & House Sparrow
0:22
54.
Lark Sparrow & Lincoln Sparrow
0:45
55.
Savannah Sparrow & Song Sparrow
0:53
56.
Swamp Sparrow & Vesper Sparrow
0:34
57.
White-throated Sparrow & European Starling
1:00
58.
Bank Swallow & Barn Swallow
0:32
59.
Northern Rough-winged Swallow & Tree Swallow
0:34
60.
Trumpeter Swan & Chimney Swift
0:34
61.
Scarlet Tanager & Blue-winged Teal
0:43
62.
Black Tern & Caspian Tern
0:34
63.
Forster's Tern & Brown Thrasher
0:49
64.
Hermit Thrush & Swainson's Thrush
0:39
65.
Wood Thrush & Tufted Titmouse
0:38
66.
Eastern Towhee & Wild Turkey
0:34
67.
Veery & Bell's Vireo
0:49
68.
Blue-headed Vireo & Philadelphia Vireo
0:51
69.
Red-eyed Vireo & Warbling Vireo
1:01
70.
Yellow-throated Vireo & Bay-breasted Warbler
0:46
71.
Black and White Warbler & Blackburnian Warbler
0:47
72.
Blackpoll Warbler & Black-throated Blue Warbler
0:39
73.
Black-throated Green Warbler & Blue-winged Warbler
0:39
74.
Canada Warbler & Cape May Warbler
0:37
75.
Cerulean Warbler & Chestnut-sided Warbler
0:39
76.
Connecticut Warbler & Golden-winged Warbler
0:45
77.
Hooded Warbler & Kentucky Warbler
0:32
78.
Magnolia Warbler & Mourning Warbler
0:27
79.
Nashville Warbler & Ovenbird Warbler
0:35
80.
Palm Warbler & Northern Parula
0:42
81.
Pine Warbler & Prothonotary Warbler
0:38
82.
Redstart Warbler & Tennessee Warbler
0:41
83.
Wilson's Warbler & Worm-eating Warbler
0:32
84.
Yellow Warbler & Common Yellowthroat
0:34
85.
Yellow-rumped Warbler & Yellow-throated Warbler
0:46
86.
Louisiana Waterthrush & Northern Waterthrush
0:38
87.
Bohemian Waxwing & Cedar Waxwing
0:32
88.
Whip-poor-will & Willet
0:39
89.
American Woodcock & Downy Woodpecker
0:46
90.
Hairy Woodpecker & Pileated Woodpecker
0:51
91.
Red-bellied Woodpecker & Red-headed Woodpecker
0:35
92.
Carolina Wren & House Wren
0:42
93.
Marsh Wren & Sedge Wren
0:41
94.
Winter Wren & Greater Yellowlegs
0:30
95.
Lesser Yellowlegs
0:11
