Audubon Christmas Bird Count


The Audubon Christmas bird count has been in existence since 1897. The South Mountain Audubon Society and friends participate in the count every year since the society was founded in 1981.

The count area is a circle with a radius of 7 miles centered near Knoxlyn, PA as shown on the following map.

CBC Boundary

The count figures for recent years are given below; the complete counts (since 1981) are available as a downloadable spreadsheet. The trends in the counts are shown on a separate page.

CW - observed during the count week rather than the day of the count.

2005 2010 2011 2012 2013 2014 2015 2016
Horned Grebe               3
Pied-billed Grebe     1         
Cackling Goose     1        
Canada Goose 1288 1551 731 629 1960 774 974 1023
Tundra Swan           3    
Mute Swan   8 154 9 15 11 23
Greater White-fronted Goose             1 3
Wood Duck     32     2  
Gadwall         4 7 2  
American Black Duck 4 7 62 22 3 6  
Mallard 98 217 187133 154 165 313 141
Northern Shoveler     23 1 1 6  
American Widgeon 2 2      2 (CW)    
Northern Pintail   1    7   2  
Lesser Scaup             29  
Ring-necked Duck   18 9 17 12 3  
Green-winged Teal     2    5 35 3
Canvasback     4        
Redhead             2  
Long-tailed Duck               1
Common Merganser 1   16    3 2  
Hooded Merganser   3 1721 2 9 8  
Bufflehead 10       1 6  
Ruddy Duck 18 12 14 6   3 5
Ring-necked Pheasant   3   2     1 (CW)
Double-crested Cormorant               1
Great Blue Heron 9 5 74   6 13 8
Wild Turkey 21 7    41   4 1
Black Vulture 53 25 9927 37 62 115 48
Turkey Vulture 43 53 162110 64 153 193 142
Bald Eagle   1 52 8 6 3 2
Northern Harrier 14 4 64 4 4 17 4
Sharp-shinned Hawk 4 3 52 1 3 3 7
Cooper’s Hawk 4 4 81 3 5 5 12
Accipiter species             2  
Red-shouldered Hawk 4 20 710 12 16 5 17
Red-tailed Hawk 46 57 5633 58 54 77 70
Rough-legged Hawk 3 1 1 2      
American Kestrel 29 31 3710 20 24 28 48
Merlin 1        1    
Unidentified Raptors             2  
Coot 1 2 3         
Killdeer 1 3 4  8 1 18 1
Wilson’s Snipe 4  15   2   1 1
Say’s Phoebe      1 (CW)        
Ring-billed Gull 7 11 225 4 3 35 9
Herring Gull 1      2      
Rock Dove 155 313 626285 196 406 482 437
Mourning Dove 543 395 294111 380 249 311 803
Screech Owl 3         2   1
Great Horned Owl 4 1 3 5 6 6 7 2
Barred Owl 7 1 1   2 2 1  
Long-eared Owl             1 1
Short-eared Owl 3              
Northern Saw-whet Owl           2    
Belted Kingfisher 2 4 8 4 3 8 5 8
Red-headed Woodpecker 9 27 20 17 6 10 12  
Red-bellied Woodpecker 38 46 72 43 78 74 94 34
Yellow-bellied Sapsucker 4 8 8 9 8 14 16 3
Downy Woodpecker 53 38 68 45 64 62 47 52
Hairy Woodpecker 21 10 21 10 9 18 13 10
Northern Flicker 16 32 31 24 33 68 26 25
Pileated Woodpecker 12 8 4 7 18 19 17 10
Blue Jay 187 189 196 117 93 173 75 103
American Crow 79 152 185 90 110 185 228 150
Fish Crow   1 7          
Common Raven 7 9 17 5 11 15 16 13
Horned Lark 35         97 27 24
Carolina Chickadee 47 55 74 61 107 105 52 88
Black-capped Chickadee 25 11 5 3   2    
Chickadee species 43 70 107   30 48 96 43
Tufted Titmouse 67 107 136 73 107 109 71 81
Rufous Hummingbird             1  
Red-breasted Nuthatch 4 2 1 9       4
White-breasted Nuthatch 48 57 88 65 91 90 68 42
Brown Creeper 4 21 5 3 4 4 5
Carolina Wren 23 38 37 59 71 53 43 58
Winter Wren 9 4 21 2 8 4 2
Golden-Crowned Kinglet     1 14 14 7 19 14
Ruby-Crowned Kinglet   3 1 1 1 3 2 3
Eastern Bluebird 53 88 57 108 56 100 107 96
Hermit Thrush 3 1 1 1 2 7 3 2
American Robin 79 14 27 23 9 84 395 149
Gray Catbird         1 1    
Northern Mockingbird 83 86 58 63 59 70 52 43
Brown Thrasher   1            
European Starling 2408 2106 3097 869 1277 2260 4455 3649
American Pipit             200  
Cedar Waxwing 23 17 31 87 17 17 90 23
Yellow-rumped Warbler 9 10 11 16 23 16 8 2
Eastern Towhee 6       2 5 4 1
American Tree Sparrow 15 14 2 8 65 12 16 28
Field Sparrow 20 5 3 9 12 19 11 2
Fox Sparrow 4   11     2  
Chipping Sparrow 4  1  1      
Savannah Sparrow   1   7     2
Song Sparrow 79 29 27 52 118 140 103 56
Swamp Sparrow 7 4 4 3 37 12 6 3
White-throated Sparrow 602 158 153 125 285 454 291 111
White-crowned Sparrow 53 73 60 9 50 57 65 27
White-winged Crossbilll      15        
Sparrow Species      6        
Dark-eyed Junco 983 421 509 248 1209 686 613 522
Northern Cardinal 163 197 165 73 241 199 150 121
Red-winged Blackbird   3  10 1 1000 99 811
Eastern Meadowlark 26 2 10 10 23 14 2
Brown-headed Cowbird 1 2   3 100 19 172
Rusty Blackbird           5   28
Yellow-headed Blackbird           1    
Common Grackle     1 9 2 302   22
Purple Finch 47 2 45 5 3 1    
House Finch 89 34 94 71 101 154 129 92
Pine Siskin   28  4 (CW)        
Common Redpoll           1    
American Goldfinch 119 53 113 39 90 112 103 52
House Sparrow 97 92 146 79 101 79 157 157
                
Total Species Reported 74 78 73 73 78 81 81 74
Total Individuals Counted 8087 7911 8037 4073 7868 9275 10756 9720