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Frank Chapman's proposal for the first "Christmas Bird Census" appeared in the December 1900 issue of Bird-Lore. On December 25, 1900, 27 birdwatchers heeded Chapman's suggestion, and their results were published in the February 1901 issue. Participation in the Christmas Bird Count has grown to over 1800 separate counts, involving more than 50,000 observers.
The Christmas Bird Count at Washita is used to track winter bird populations using the refuge. The count was initiated in 1971 and has been completed all but two years (1987 & 1990) since then.
| Species | Total | Species | Total |
| Common Loon | 43 | Hairy Woodpecker | 5 |
| Pacific Loon | 1 | Downy Woodpecker | 26 |
| Double-crested Cormorant | 3 | Eastern Phoebe | 1 |
| Horned Grebe | 19 | Horned Lark | 40 |
| Western Grebe | 3 | Blue Jay | 4 |
| Pied-billed Grebe | 28 | Western Scrub-Jay | 1 |
| American White Pelican | 6 | American Crow | 70 |
| Great Blue Heron | 26 | Carolina Chickadee | 35 |
| Trumpeter Swan | 14 | White-breasted Nuthatch | 4 |
| Mallard | 68 | Yellow-rumped Warbler | 10 |
| Gadwall | 43 | Bewick's Wren | 6 |
| Northern Pintail | 82 | Carolina Wren | 3 |
| Green-winged Teal | 32 | Winter Wren | 2 |
| American Wigeon | 270 | Brown Thrasher | 2 |
| Northern Shoveler | 43 | Norther Mockingbird | 21 |
| Redhead | 120 | American Robin | 280 |
| Ring-necked Duck | 88 | Eastern Bluebird | 41 |
| Canvasback | 13 | Golden-crowned Kinglet | 1 |
| Lesser Scaup | 12 | Ruby-crowned Kinglet | 10 |
| Common Goldeneye | 11 | American Pipit | 1 |
| Barrow's Goldeneye | 1 | Cedar Waxwing | 32 |
| Bufflehead | 58 | Hermit Thrush | 1 |
| Hooded Merganser | 113 | Loggerhead Shrike | 15 |
| Common Merganser | 8 | European Starling | 1896 |
| Canada Goose | 81525 | Eastern Meadowlark | 84 |
| White-fronted Goose | 4 | Western Meadowlark | 169 |
| Ross's Goose | 1903 | Meadowlark sp. | 405 |
| Snow Goose | 2810 | Red-winged Blackbird | 435 |
| Red-tailed Hawk | 68 | Brewer's Blackbird | 676 |
| Ferruginous Hawk | 2 | Blackbird sp. | 85 |
| Bald Eagle | 9 | Common Grackle | 3 |
| Prairie Falcon | 4 | Brown-headed Cowbird | 152 |
| Red-shouldered Hawk | 1 | Northern Cardinal | 106 |
| Northern Harrier | 35 | House Finch | 56 |
| American Kestrel | 29 | American Goldfinch | 92 |
| Northern Bobwhite | 124 | Spotted Towhee | 9 |
| American Coot | 2352 | Savannah Sparrow | 65 |
| Killdeer | 11 | Dark-eyed Junco | 284 |
| Greater Yellowlegs | 10 | House Sparrow | 74 |
| Ring-billed Gull | 253 | Eurasian Tree Sparrow | 83 |
| Bonaparte's Gull | 208 | Vesper Sparrow | 6 |
| Herring Gull | 20 | Le Conte's Sparrow | 1 |
| Rock Dove | 20 | Field Sparrow | 31 |
| Mourning Dove | 153 | Harris's Sparrow | 166 |
| Eurasian Collared-Dove | 4 | White-crowned Sparrow | 101 |
| Barred Owl | 3 | Fox Sparrow | 10 |
| Great Horned Owl | 5 | Lincoln Sparrow | 1 |
| Eastern Screech-Owl | 1 | Song Sparrow | 98 |
| Belted Kingfisher | 6 | Swamp Sparrow | 2 |
| Northern Flicker | 25 | Sparrow sp. | 27 |
| Northern Flicker-red shafted | 17 | Chestnut-collared Longspur | 100 |
| Northern Flicker-yellow shafted | 10 | Pine Siskin | 62 |
| Red-bellied Woodpecker | 21 | ||
| Red-headed Woodpecker | 2 | Total Species | 106 |
