-
1
American Bittern & Least Bittern
00:28
$0.15
-
2
Brewer's Blackbird & Red-winged Blackbird
00:54
$0.15
-
3
Rusty Blackbird & Yellow-headed Blackbird
00:41
$0.15
-
4
Eastern Bluebird & Bobolink
00:50
$0.15
-
5
Indigo Bunting & Northern Cardinal
00:56
$0.15
-
6
Grey Catbird & Yellow-breasted Chat
00:38
$0.15
-
7
Black-capped Chickadee & Boreal Chickadee
00:31
$0.15
-
8
Greater Prairie Chicken & American Coot
00:36
$0.15
-
9
Brown-headed Cowbird & Sandhill Crane
00:44
$0.15
-
10
Brown Creeper & White-winged Crossbill
00:40
$0.15
-
11
American Crow & Black billed Cuckoo
00:43
$0.15
-
12
Yellow-billed Cuckoo & Dickcissel
00:30
$0.15
-
13
Mourning Dove & Rock Dove
00:33
$0.15
-
14
Short-billed Dowitcher & Wood Duck
00:27
$0.15
-
15
Bald Eagle & Great Egret
00:35
$0.15
-
16
House Finch & Purple Finch
00:36
$0.15
-
17
Yellow-shafted Flicker & Acadian Flycatcher
00:31
$0.15
-
18
Alder Flycatcher & Great-crested Flycatcher
00:23
$0.15
-
19
Least Flycatcher & Olive-sided Flycatcher
00:24
$0.15
-
20
Willow Flycatcher & Yellow-bellied Flycatcher
00:26
$0.15
-
21
Blue-gray Gnatcatcher & American Goldfinch
00:40
$0.15
-
22
Canada Goose & Northern Goshawk
00:33
$0.15
-
23
Common Grackle & Pied-billed Grebe
00:32
$0.15
-
24
Evening Grosbeak & Rose-breasted Grosbeak
00:40
$0.15
-
25
Ruffed Grouse & Ring-billed Gull
00:54
$0.15
-
26
Broad-winged Hawk & Red-shouldered Hawk
00:28
$0.15
-
27
Red-tailed Hawk & Black-crowned Night Heron
00:31
$0.15
-
28
Green Heron & Ruby-throated Hummingbird
00:22
$0.15
-
29
Blue Jay & Grey Jay
00:44
$0.15
-
30
Dark-eyed Junco & American Kestrel
00:34
$0.15
-
31
Killdeer & Eastern Kingbird
00:43
$0.15
-
32
Belted Kingfisher & Golden-crowned Kinglet
00:32
$0.15
-
33
Ruby-crowned Kinglet & Horned Lark
00:38
$0.15
-
34
Common Loon & Mallard
00:32
$0.15
-
35
Purple Martin & Eastern Meadowlark
00:32
$0.15
-
36
Western Meadowlark & Merlin
00:29
$0.15
-
37
Common Moorhen & Red-breasted Nuthatch
00:31
$0.15
-
38
White-breasted Nuthatch & Baltimore Oriole
00:37
$0.15
-
39
Orchard Oriole & Barred Owl
00:41
$0.15
-
40
Eastern Screech Owl & Great-horned Owl
00:41
$0.15
-
41
Long-eared Owl & Northern Saw-whet Owl
00:27
$0.15
-
42
Eastern Wood Pewee & Ring-necked Pheasant
00:27
$0.15
-
43
Eastern Phoebe & Semipalmated Plover
00:35
$0.15
-
44
Sora Rail & Virginia Rail
00:48
$0.15
-
45
Yellow Rail & Common Raven
00:48
$0.15
-
46
American Robin & Baird's Sandpiper
00:30
$0.15
-
47
Pectoral Sandpiper & Semipalmated Sandpiper
00:25
$0.15
-
48
Spotted Sandpiper & Upland Sandpiper
00:37
$0.15
-
49
Yellow-bellied Sapsucker & Pine Siskin
00:29
$0.15
-
50
Common Snipe & Sparrow Tree American
00:32
$0.15
-
51
Chipping Sparrow & Clay-colored Sparrow
00:37
$0.15
-
52
Field Sparrow & Grasshopper Sparrow
00:53
$0.15
-
53
Henslow's Sparrow & House Sparrow
00:23
$0.15
-
54
Lark Sparrow & Lincoln Sparrow
00:45
$0.15
-
55
Savannah Sparrow & Song Sparrow
00:53
$0.15
-
56
Swamp Sparrow & Vesper Sparrow
00:35
$0.15
-
57
White-throated Sparrow & European Starling
01:00
$0.15
-
58
Bank Swallow & Barn Swallow
00:32
$0.15
-
59
Northern Rough-winged Swallow & Tree Swallow
00:34
$0.15
-
60
Trumpeter Swan & Chimney Swift
00:34
$0.15
-
61
Scarlet Tanager & Blue-winged Teal
00:43
$0.15
-
62
Black Tern & Caspian Tern
00:34
$0.15
-
63
Forster's Tern & Brown Thrasher
00:49
$0.15
-
64
Hermit Thrush & Swainson's Thrush
00:39
$0.15
-
65
Wood Thrush & Tufted Titmouse
00:38
$0.15
-
66
Eastern Towhee & Wild Turkey
00:34
$0.15
-
67
Veery & Bell's Vireo
00:49
$0.15
-
68
Blue-headed Vireo & Philadelphia Vireo
00:51
$0.15
-
69
Red-eyed Vireo & Warbling Vireo
01:02
$0.15
-
70
Yellow-throated Vireo & Bay-breasted Warbler
00:46
$0.15
-
71
Black and White Warbler & Blackburnian Warbler
00:47
$0.15
-
72
Blackpoll Warbler & Black-throated Blue Warbler
00:39
$0.15
-
73
Black-throated Green Warbler & Blue-winged Warbler
00:39
$0.15
-
74
Canada Warbler & Cape May Warbler
00:38
$0.15
-
75
Cerulean Warbler & Chestnut-sided Warbler
00:39
$0.15
-
76
Connecticut Warbler & Golden-winged Warbler
00:45
$0.15
-
77
Hooded Warbler & Kentucky Warbler
00:32
$0.15
-
78
Magnolia Warbler & Mourning Warbler
00:27
$0.15
-
79
Nashville Warbler & Ovenbird Warbler
00:35
$0.15
-
80
Palm Warbler & Northern Parula
00:42
$0.15
-
81
Pine Warbler & Prothonotary Warbler
00:38
$0.15
-
82
Redstart Warbler & Tennessee Warbler
00:41
$0.15
-
83
Wilson's Warbler & Worm-eating Warbler
00:32
$0.15
-
84
Yellow Warbler & Common Yellowthroat
00:34
$0.15
-
85
Yellow-rumped Warbler & Yellow-throated Warbler
00:46
$0.15
-
86
Louisiana Waterthrush & Northern Waterthrush
00:38
$0.15
-
87
Bohemian Waxwing & Cedar Waxwing
00:32
$0.15
-
88
Whip-poor-will & Willet
00:39
$0.15
-
89
American Woodcock & Downy Woodpecker
00:46
$0.15
-
90
Hairy Woodpecker & Pileated Woodpecker
00:51
$0.15
-
91
Red-bellied Woodpecker & Red-headed Woodpecker
00:35
$0.15
-
92
Carolina Wren & House Wren
00:42
$0.15
-
93
Marsh Wren & Sedge Wren
00:42
$0.15
-
94
Winter Wren & Greater Yellowlegs
00:30
$0.15
-
95
Lesser Yellowlegs
00:11
$0.15
