Below are the dates of the first report for each species seen in Calgary in 2010. Species with no date were not reported. Species in bold are reportable.
| Fulvous Whistling-Duck | |
| Greater White-fronted Goose | |
| Snow Goose | January 1 |
| Ross’s Goose | |
| Cackling Goose | March 3 |
| Canada Goose | January 1 |
| Brant | |
| Trumpeter Swan | January 3 |
| Tundra Swan | March 19 |
| Mute Swan | March 31 |
| Wood Duck | January 3 |
| Gadwall | March 25 |
| Eurasian Wigeon | March 25 |
| American Wigeon | January 1 |
| American Black Duck | |
| Mallard | January 1 |
| Blue-winged Teal | April 18 |
| Cinnamon Teal | April 16 |
| Northern Shoveler | February 11 |
| Northern Pintail | January 10 |
| Garganey | |
| Green-winged Teal | January 1 |
| Canvasback | March 28 |
| Redhead | January 9 |
| Ring-necked Duck | March 20 |
| Tufted Duck | |
| Greater Scaup | February 2 |
| Lesser Scaup | January 16 |
| King Eider | |
| Harlequin Duck | January 3 |
| Surf Scoter | May 7 |
| White-winged Scoter | April 30 |
| Black Scoter | |
| Long-tailed Duck | January 1 |
| Bufflehead | January 1 |
| Common Goldeneye | January 1 |
| Barrow’s Goldeneye | January 1 |
| Hooded Merganser | January 10 |
| Common Merganser | January 1 |
| Red-breasted Merganser | April 18 |
| Ruddy Duck | April 19 |
| Gray Partridge | January 2 |
| Ring-necked Pheasant | January 3 |
| Ruffed Grouse | January 9 |
| Spruce Grouse | |
| White-tailed Ptarmigan | |
| Blue Grouse | |
| Sharp-tailed Grouse | |
| Wild Turkey | |
| Red-throated Loon | |
| Pacific Loon | October 23 |
| Common Loon | March 23 |
| Yellow-billed Loon | |
| Pied-billed Grebe | April 18 |
| Horned Grebe | April 17 |
| Red-necked Grebe | April 18 |
| Eared Grebe | April 17 |
| Western Grebe | May 7 |
| Clark’s Grebe | |
| American White Pelican | May 7 |
| Double-crested Cormorant | April 20 |
| American Bittern | September 12 |
| Great Blue Heron | April 3 |
| Great Egret | |
| Snowy Egret | |
| Cattle Egret | |
| Green Heron | |
| Black-crowned Night-Heron | May 25 |
| Yellow-crowned Night-Heron | |
| White-faced Ibis | August 30 |
| Turkey Vulture | May 1 |
| Osprey | April 18 |
| Bald Eagle | January 1 |
| Northern Harrier | April 17 |
| Sharp-shinned Hawk | January 3 |
| Cooper’s Hawk | February 25 |
| Northern Goshawk | January 5 |
| Broad-winged Hawk | May 11 |
| Swainson’s Hawk | April 2 |
| Red-tailed Hawk | January 1 |
| Ferruginous Hawk | April 2 |
| Rough-legged Hawk | January 3 |
| Golden Eagle | January 6 |
| American Kestrel | February 25 |
| Merlin | January 2 |
| Gyrfalcon | January 2 |
| Peregrine Falcon | April 7 |
| Prairie Falcon | January 9 |
| Yellow Rail | |
| Virginia Rail | May 24 |
| Sora | May 21 |
| American Coot | January 9 |
| Sandhill Crane | April 21 |
| Whooping Crane | |
| Black-bellied Plover | May 14 |
| American Golden-Plover | August 16 |
| Pacific Golden-Plover | August 15 |
| Semipalmated Plover | May 2 |
| Piping Plover | |
| Killdeer | January 15 |
| Black-necked Stilt | April 17 |
| American Avocet | April 17 |
| Greater Yellowlegs | April 11 |
| Lesser Yellowlegs | April 14 |
| Spotted Redshank | |
| Solitary Sandpiper | April 20 |
| Willet | May 1 |
| Wandering Tattler | |
| Spotted Sandpiper | May 9 |
| Upland Sandpiper | August 15 |
| Whimbrel | April 16 |
| Long-billed Curlew | April 16 |
| Hudsonian Godwit | April 30 |
| Marbled Godwit | April 30 |
| Ruddy Turnstone | |
| Black Turnstone | |
| Red Knot | |
| Sanderling | July 31 |
| Semipalmated Sandpiper | April 24 |
| Western Sandpiper | May 8 |
| Red-necked Stint | |
| Least Sandpiper | April 30 |
| White-rumped Sandpiper | May 25 |
| Baird’s Sandpiper | May 16 |
| Pectoral Sandpiper | May 20 |
| Sharp-tailed Sandpiper | |
| Dunlin | |
| Curlew Sandpiper | |
| Stilt Sandpiper | July 10 |
| Spoonbill Sandpiper | |
| Buff-breasted Sandpiper | August 29 |
| Ruff | |
| Short-billed Dowitcher | May 9 |
| Long-billed Dowitcher | May 1 |
| Wilson’s Snipe | April 11 |
| Wilson’s Phalarope | May 8 |
| Red-necked Phalarope | July 10 |
| Red Phalarope | |
| Pomarine Jaeger | |
| Parasitic Jaeger | |
| Long-tailed Jaeger | |
| Franklin’s Gull | March 30 |
| Little Gull | |
| Bonaparte’s Gull | March 30 |
| Mew Gull | September 9 |
| Ring-billed Gull | March 4 |
| California Gull | February 28 |
| Herring Gull | March 7 |
| Thayer’s Gull | April 16 |
| Iceland Gull | April 26 |
| Lesser Black-backed Gull | April 16 |
| Slaty-backed Gull | November 15 |
| Glaucous-winged Gull | April 24 |
| Glaucous Gull | March 28 |
| Sabine’s Gull | May 15 |
| Black-legged Kittiwake | |
| Caspian Tern | May 24 |
| Common Tern | May 24 |
| Arctic Tern | May 24 |
| Forster’s Tern | May 23 |
| Black Tern | May 21 |
| Ancient Murrelet | |
| Rock Pigeon | January 1 |
| Band-tailed Pigeon | |
| Eurasian Collared-Dove | February 22 |
| Mourning Dove | January 1 |
| Black-billed Cuckoo | |
| Barn Owl | |
| Great Horned Owl | January 1 |
| Snowy Owl | January 2 |
| Northern Hawk Owl | October 29 |
| Northern Pygmy-Owl | October 19 |
| Burrowing Owl | |
| Barred Owl | |
| Great Gray Owl | December 10 |
| Long-eared Owl | September 18 |
| Short-eared Owl | October 11 |
| Boreal Owl | |
| Northern Saw-whet Owl | February 23 |
| Common Nighthawk | May 24 |
| Common Poorwill | |
| Black Swift | |
| Vaux’s Swift | |
| White-throated Swift | |
| Ruby-throated Hummingbird | June 3 |
| Black-chinned Hummingbird | |
| Anna’s Hummingbird | October 22 |
| Calliope Hummingbird | May 21 |
| Rufous Hummingbird | May 16 |
| Belted Kingfisher | January 15 |
| Lewis’s Woodpecker | |
| Red-headed Woodpecker | |
| Williamson’s Sapsucker | |
| Yellow-bellied Sapsucker | April 24 |
| Red-naped Sapsucker | May 1 |
| Red-breasted Sapsucker | |
| Downy Woodpecker | January 1 |
| Hairy Woodpecker | January 1 |
| American Three-toed Woodpecker | January 3 |
| Black-backed Woodpecker | |
| Northern Flicker | January 1 |
| Pileated Woodpecker | January 24 |
| Olive-sided Flycatcher | June 5 |
| Western Wood-Pewee | May 14 |
| Yellow-bellied Flycatcher | August 20 |
| Alder Flycatcher | June 6 |
| Willow Flycatcher | July 28 |
| Least Flycatcher | May 21 |
| Hammond’s Flycatcher | August 21 |
| Gray Flycatcher | |
| Dusky Flycatcher | August 11 |
| “Western Flycatcher“ | August 11 |
| Eastern Phoebe | April 19 |
| Say’s Phoebe | May 2 |
| Great Crested Flycatcher | August 31 |
| Western Kingbird | May 24 |
| Eastern Kingbird | May 14 |
| Scissor-tailed Flycatcher | |
| Loggerhead Shrike | |
| Northern Shrike | January 1 |
| Yellow-throated Vireo | |
| Cassin’s Vireo | May 20 |
| Blue-headed Vireo | May 30 |
| Warbling Vireo | May 15 |
| Philadelphia Vireo | August 14 |
| Red-eyed Vireo | May 29 |
| Gray Jay | February 26 |
| Steller’s Jay | March 16 |
| Blue Jay | January 1 |
| Clark’s Nutcracker | |
| Black-billed Magpie | January 1 |
| American Crow | January 1 |
| Common Raven | January 1 |
| Horned Lark | March 13 |
| Purple Martin | May 15 |
| Tree Swallow | April 17 |
| Violet-green Swallow | April 17 |
| Northern Rough-winged Swallow | April 22 |
| Bank Swallow | April 25 |
| Cliff Swallow | May 6 |
| Barn Swallow | April 25 |
| Black-capped Chickadee | January 1 |
| Mountain Chickadee | January 12 |
| Boreal Chickadee | January 1 |
| Red-breasted Nuthatch | January 1 |
| White-breasted Nuthatch | January 1 |
| Brown Creeper | January 3 |
| Rock Wren | |
| House Wren | May 2 |
| Winter Wren | May 3 |
| Sedge Wren | |
| Marsh Wren | May 21 |
| American Dipper | January 19 |
| Golden-crowned Kinglet | January 10 |
| Ruby-crowned Kinglet | April 18 |
| Blue-gray Gnatcatcher | |
| Northern Wheatear | |
| Eastern Bluebird | (possible 2Q sighting?) |
| Western Bluebird | |
| Mountain Bluebird | March 25 |
| Townsend’s Solitaire | February 20 |
| Veery | May 24 |
| Gray-cheeked Thrush | May 31 |
| Swainson’s Thrush | May 11 |
| Hermit Thrush | April 30 |
| American Robin | January 9 |
| Varied Thrush | January 2 |
| Gray Catbird | May 21 |
| Northern Mockingbird | May 19 |
| Sage Thrasher | |
| Brown Thrasher | May 15 |
| European Starling | January 1 |
| Siberian Accentor | |
| American Pipit | April 18 |
| Sprague’s Pipit | |
| Bohemian Waxwing | January 1 |
| Cedar Waxwing | February 13 |
| Blue-winged Warbler | |
| Tennessee Warbler | May 23 |
| Orange-crowned Warbler | May 1 |
| Nashville Warbler | May 30 |
| Northern Parula | |
| Yellow Warbler | May 14 |
| Chestnut-sided Warbler | September 13 |
| Magnolia Warbler | May 27 |
| Cape May Warbler | August 19 |
| Black-throated Blue Warbler | |
| Yellow-rumped Warbler | April 2 |
| Black-throated Gray Warbler | |
| Black-throated Green Warbler | May 14 |
| Townsend’s Warbler | June 7 |
| Blackburnian Warbler | August 27 |
| Pine Warbler | |
| Palm Warbler | September 7 |
| Bay-breasted Warbler | August 19 |
| Blackpoll Warbler | May 15 |
| Black-and-white Warbler | June 3 |
| American Redstart | May 25 |
| Ovenbird | June 2 |
| Northern Waterthrush | May 15 |
| Kentucky Warbler | |
| Connecticut Warbler | September 11 |
| Mourning Warbler | May 31 |
| MacGillivray’s Warbler | May 23 |
| Common Yellowthroat | May 18 |
| Hooded Warbler | August 27 |
| Wilson’s Warbler | June 3 |
| Canada Warbler | August 12 |
| Yellow-breasted Chat | |
| Summer Tanager | June 10 |
| Scarlet Tanager | |
| Western Tanager | May 10 |
| Green-tailed Towhee | |
| Spotted Towhee | May 14 |
| American Tree Sparrow | January 1 |
| Chipping Sparrow | May 13 |
| Clay-colored Sparrow | May 14 |
| Brewer’s Sparrow | |
| Field Sparrow | |
| Vesper Sparrow | May 2 |
| Lark Sparrow | |
| Lark Bunting | |
| Savannah Sparrow | April 24 |
| Grasshopper Sparrow | |
| Baird’s Sparrow | June 4 |
| Le Conte’s Sparrow | June 6 |
| Nelson’s Sparrow | June 6 |
| Fox Sparrow | May 30 |
| Song Sparrow | February 28 |
| Lincoln’s Sparrow | April 19 |
| Swamp Sparrow | May 4 |
| White-throated Sparrow | January 1 |
| Harris’s Sparrow | January 1 |
| White-crowned Sparrow | March 6 |
| Golden-crowned Sparrow | September 21 |
| Dark-eyed Junco | January 2 |
| McCown’s Longspur | |
| Lapland Longspur | March 25 |
| Smith’s Longspur | |
| Chestnut-collared Longspur | |
| Snow Bunting | February 6 |
| Northern Cardinal | June 5 |
| Rose-breasted Grosbeak | May 14 |
| Black-headed Grosbeak | May 29 |
| Lazuli Bunting | June 7 |
| Indigo Bunting | |
| Bobolink | |
| Red-winged Blackbird | April 6 |
| Western Meadowlark | March 28 |
| Yellow-headed Blackbird | April 17 |
| Rusty Blackbird | February 11 |
| Brewer’s Blackbird | April 18 |
| Common Grackle | February 24 |
| Brown-headed Cowbird | May 1 |
| Bullock’s Oriole | |
| Baltimore Oriole | May 18 |
| Gray-crowned Rosy-Finch | |
| Pine Grosbeak | January 4 |
| Purple Finch | April 23 |
| Cassin’s Finch | |
| House Finch | January 1 |
| Red Crossbill | January 10 |
| White-winged Crossbill | January 1 |
| Common Redpoll | January 1 |
| Hoary Redpoll | |
| Pine Siskin | January 1 |
| American Goldfinch | May 15 |
| Evening Grosbeak | April 24 |
| House Sparrow | January 1 |
Bob Lefebvre
