Mark Dennis: Canada Year List 2020 Clements, All records: Top Blockers Record(s) 1 to 272 of 272 total. Seq. Species Scientific Name Seen By Other Listers Other Listers (%) 1 Snow Goose Anser caerulescens 1 50.00 2 Greater White-fronted Goose Anser albifrons 2 100.00 3 Brant Branta bernicla 1 50.00 4 Barnacle Goose Branta leucopsis 1 50.00 5 Canada Goose Branta canadensis 2 100.00 6 Tundra Swan Cygnus columbianus 1 50.00 7 Wood Duck Aix sponsa 2 100.00 8 Garganey Spatula querquedula 1 50.00 9 Blue-winged Teal Spatula discors 2 100.00 10 Northern Shoveler Spatula clypeata 2 100.00 11 Gadwall Mareca strepera 2 100.00 12 American Wigeon Mareca americana 2 100.00 13 Mallard Anas platyrhynchos 2 100.00 14 American Black Duck Anas rubripes 2 100.00 15 Northern Pintail Anas acuta 2 100.00 16 Green-winged Teal Anas crecca 2 100.00 17 Canvasback Aythya valisineria 2 100.00 18 Ring-necked Duck Aythya collaris 2 100.00 19 Tufted Duck Aythya fuligula 1 50.00 20 Greater Scaup Aythya marila 2 100.00 21 Lesser Scaup Aythya affinis 2 100.00 22 Common Eider Somateria mollissima 1 50.00 23 Harlequin Duck Histrionicus histrionicus 2 100.00 24 Surf Scoter Melanitta perspicillata 2 100.00 25 White-winged Scoter Melanitta deglandi 2 100.00 26 Black Scoter Melanitta americana 2 100.00 27 Long-tailed Duck Clangula hyemalis 2 100.00 28 Bufflehead Bucephala albeola 2 100.00 29 Common Goldeneye Bucephala clangula 2 100.00 30 Barrow's Goldeneye Bucephala islandica 2 100.00 31 Hooded Merganser Lophodytes cucullatus 2 100.00 32 Common Merganser Mergus merganser 2 100.00 33 Red-breasted Merganser Mergus serrator 2 100.00 34 Ruffed Grouse Bonasa umbellus 1 50.00 35 Ring-necked Pheasant Phasianus colchicus 1 50.00 36 Pied-billed Grebe Podilymbus podiceps 2 100.00 37 Horned Grebe Podiceps auritus 2 100.00 38 Red-necked Grebe Podiceps grisegena 2 100.00 39 Rock Pigeon Columba livia 2 100.00 40 Eurasian Collared-Dove Streptopelia decaocto 1 50.00 41 White-winged Dove Zenaida asiatica 1 50.00 42 Mourning Dove Zenaida macroura 2 100.00 43 Yellow-billed Cuckoo Coccyzus americanus 2 100.00 44 Common Nighthawk Chordeiles minor 2 100.00 45 Chimney Swift Chaetura pelagica 2 100.00 46 Ruby-throated Hummingbird Archilochus colubris 2 100.00 47 Sora Porzana carolina 1 50.00 48 Sandhill Crane Antigone canadensis 1 50.00 49 American Avocet Recurvirostra americana 2 100.00 50 American Oystercatcher Haematopus palliatus 1 50.00 51 Black-bellied Plover Pluvialis squatarola 2 100.00 52 American Golden-Plover Pluvialis dominica 1 50.00 53 Killdeer Charadrius vociferus 2 100.00 54 Semipalmated Plover Charadrius semipalmatus 2 100.00 55 Piping Plover Charadrius melodus 1 50.00 56 Northern Lapwing Vanellus vanellus 1 50.00 57 Whimbrel Numenius phaeopus 1 50.00 58 Hudsonian Godwit Limosa haemastica 1 50.00 59 Short-billed Dowitcher Limnodromus griseus 2 100.00 60 Long-billed Dowitcher Limnodromus scolopaceus 1 50.00 61 American Woodcock Scolopax minor 1 50.00 62 Wilson's Snipe Gallinago delicata 2 100.00 63 Wilson's Phalarope Phalaropus tricolor 1 50.00 64 Red Phalarope Phalaropus fulicarius 1 50.00 65 Red-necked Phalarope Phalaropus lobatus 2 100.00 66 Spotted Sandpiper Actitis macularius 2 100.00 67 Solitary Sandpiper Tringa solitaria 1 50.00 68 Lesser Yellowlegs Tringa flavipes 2 100.00 69 Willet Tringa semipalmata 1 50.00 70 Greater Yellowlegs Tringa melanoleuca 2 100.00 71 Ruddy Turnstone Arenaria interpres 1 50.00 72 Red Knot Calidris canutus 2 100.00 73 Ruff Calidris pugnax 1 50.00 74 Buff-breasted Sandpiper Calidris subruficollis 1 50.00 75 Sanderling Calidris alba 2 100.00 76 Dunlin Calidris alpina 2 100.00 77 Purple Sandpiper Calidris maritima 1 50.00 78 White-rumped Sandpiper Calidris fuscicollis 1 50.00 79 Least Sandpiper Calidris minutilla 2 100.00 80 Pectoral Sandpiper Calidris melanotos 2 100.00 81 Semipalmated Sandpiper Calidris pusilla 2 100.00 82 Long-tailed Jaeger Stercorarius longicaudus 1 50.00 83 Parasitic Jaeger Stercorarius parasiticus 2 100.00 84 Pomarine Jaeger Stercorarius pomarinus 1 50.00 85 Great Skua Stercorarius skua 1 50.00 86 South Polar Skua Stercorarius maccormicki 1 50.00 87 Atlantic Puffin Fratercula arctica 1 50.00 88 Black Guillemot Cepphus grylle 1 50.00 89 Razorbill Alca torda 1 50.00 90 Dovekie Alle alle 1 50.00 91 Thick-billed Murre Uria lomvia 1 50.00 92 Common Murre Uria aalge 1 50.00 93 Black-legged Kittiwake Rissa tridactyla 2 100.00 94 Bonaparte's Gull Chroicocephalus philadelphia 2 100.00 95 Black-headed Gull Chroicocephalus ridibundus 1 50.00 96 Common Gull Larus canus 1 50.00 97 Ring-billed Gull Larus delawarensis 2 100.00 98 Herring Gull Larus argentatus 2 100.00 99 Great Black-backed Gull Larus marinus 2 100.00 100 Glaucous Gull Larus hyperboreus 2 100.00 101 Lesser Black-backed Gull Larus fuscus 2 100.00 102 Iceland Gull Larus glaucoides 2 100.00 103 Least Tern Sternula antillarum 1 50.00 104 Arctic Tern Sterna paradisaea 1 50.00 105 Common Tern Sterna hirundo 2 100.00 106 Roseate Tern Sterna dougallii 1 50.00 107 Red-throated Loon Gavia stellata 1 50.00 108 Common Loon Gavia immer 2 100.00 109 Wilson's Storm-Petrel Oceanites oceanicus 1 50.00 110 Leach's Storm-Petrel Hydrobates leucorhous 1 50.00 111 Northern Fulmar Fulmarus glacialis 1 50.00 112 Cory's Shearwater Calonectris diomedea 1 50.00 113 Great Shearwater Ardenna gravis 1 50.00 114 Sooty Shearwater Ardenna grisea 1 50.00 115 Manx Shearwater Puffinus puffinus 1 50.00 116 Northern Gannet Morus bassanus 1 50.00 117 Great Cormorant Phalacrocorax carbo 1 50.00 118 Double-crested Cormorant Nannopterum auritum 2 100.00 119 American Bittern Botaurus lentiginosus 1 50.00 120 Yellow-crowned Night Heron Nyctanassa violacea 1 50.00 121 Black-crowned Night Heron Nycticorax nycticorax 2 100.00 122 Little Blue Heron Egretta caerulea 1 50.00 123 Snowy Egret Egretta thula 1 50.00 124 Green Heron Butorides virescens 2 100.00 125 Western Cattle Egret Bubulcus ibis 1 50.00 126 Great Egret Ardea alba 2 100.00 127 Gray Heron Ardea cinerea 1 50.00 128 Great Blue Heron Ardea herodias 2 100.00 129 Glossy Ibis Plegadis falcinellus 1 50.00 130 Turkey Vulture Cathartes aura 2 100.00 131 Osprey Pandion haliaetus 2 100.00 132 Northern Harrier Circus hudsonius 2 100.00 133 Sharp-shinned Hawk Accipiter striatus 2 100.00 134 Cooper's Hawk Accipiter cooperii 2 100.00 135 American Goshawk Accipiter atricapillus 1 50.00 136 Bald Eagle Haliaeetus leucocephalus 2 100.00 137 Red-shouldered Hawk Buteo lineatus 2 100.00 138 Broad-winged Hawk Buteo platypterus 2 100.00 139 Red-tailed Hawk Buteo jamaicensis 2 100.00 140 Rough-legged Hawk Buteo lagopus 2 100.00 141 Snowy Owl Bubo scandiacus 2 100.00 142 Great Horned Owl Bubo virginianus 2 100.00 143 Barred Owl Strix varia 1 50.00 144 Short-eared Owl Asio flammeus 1 50.00 145 Northern Saw-whet Owl Aegolius acadicus 1 50.00 146 Belted Kingfisher Megaceryle alcyon 2 100.00 147 Yellow-bellied Sapsucker Sphyrapicus varius 2 100.00 148 Red-bellied Woodpecker Melanerpes carolinus 2 100.00 149 Downy Woodpecker Dryobates pubescens 2 100.00 150 Hairy Woodpecker Dryobates villosus 2 100.00 151 Pileated Woodpecker Dryocopus pileatus 2 100.00 152 Northern Flicker Colaptes auratus 2 100.00 153 American Kestrel Falco sparverius 2 100.00 154 Merlin Falco columbarius 2 100.00 155 Peregrine Falcon Falco peregrinus 2 100.00 156 Olive-sided Flycatcher Contopus cooperi 2 100.00 157 Eastern Wood-Pewee Contopus virens 2 100.00 158 Yellow-bellied Flycatcher Empidonax flaviventris 2 100.00 159 Acadian Flycatcher Empidonax virescens 1 50.00 160 Alder Flycatcher Empidonax alnorum 1 50.00 161 Willow Flycatcher Empidonax traillii 2 100.00 162 Least Flycatcher Empidonax minimus 2 100.00 163 Eastern Phoebe Sayornis phoebe 2 100.00 164 Ash-throated Flycatcher Myiarchus cinerascens 1 50.00 165 Sulphur-bellied Flycatcher Myiodynastes luteiventris 1 50.00 166 Eastern Kingbird Tyrannus tyrannus 2 100.00 167 White-eyed Vireo Vireo griseus 1 50.00 168 Blue-headed Vireo Vireo solitarius 2 100.00 169 Philadelphia Vireo Vireo philadelphicus 2 100.00 170 Warbling Vireo Vireo gilvus 2 100.00 171 Red-eyed Vireo Vireo olivaceus 2 100.00 172 Northern Shrike Lanius borealis 2 100.00 173 Canada Jay Perisoreus canadensis 1 50.00 174 Blue Jay Cyanocitta cristata 2 100.00 175 American Crow Corvus brachyrhynchos 2 100.00 176 Common Raven Corvus corax 2 100.00 177 Black-capped Chickadee Poecile atricapillus 2 100.00 178 Boreal Chickadee Poecile hudsonicus 1 50.00 179 Horned Lark Eremophila alpestris 2 100.00 180 Bank Swallow Riparia riparia 2 100.00 181 Tree Swallow Tachycineta bicolor 2 100.00 182 Barn Swallow Hirundo rustica 2 100.00 183 Cliff Swallow Petrochelidon pyrrhonota 2 100.00 184 Ruby-crowned Kinglet Corthylio calendula 2 100.00 185 Golden-crowned Kinglet Regulus satrapa 2 100.00 186 White-breasted Nuthatch Sitta carolinensis 2 100.00 187 Red-breasted Nuthatch Sitta canadensis 2 100.00 188 Brown Creeper Certhia americana 2 100.00 189 Blue-Gray Gnatcatcher Polioptila caerulea 2 100.00 190 Rock Wren Salpinctes obsoletus 1 50.00 191 House Wren Troglodytes aedon 2 100.00 192 Winter Wren Troglodytes hiemalis 2 100.00 193 Marsh Wren Cistothorus palustris 2 100.00 194 European Starling Sturnus vulgaris 2 100.00 195 Gray Catbird Dumetella carolinensis 2 100.00 196 Northern Mockingbird Mimus polyglottos 2 100.00 197 Eastern Bluebird Sialia sialis 2 100.00 198 Townsend's Solitaire Myadestes townsendi 2 100.00 199 Veery Catharus fuscescens 2 100.00 200 Swainson's Thrush Catharus ustulatus 2 100.00 201 Hermit Thrush Catharus guttatus 2 100.00 202 American Robin Turdus migratorius 2 100.00 203 Bohemian Waxwing Bombycilla garrulus 1 50.00 204 Cedar Waxwing Bombycilla cedrorum 2 100.00 205 House Sparrow Passer domesticus 2 100.00 206 American Pipit Anthus rubescens 1 50.00 207 Evening Grosbeak Coccothraustes vespertinus 2 100.00 208 Pine Grosbeak Pinicola enucleator 1 50.00 209 House Finch Haemorhous mexicanus 2 100.00 210 Purple Finch Haemorhous purpureus 1 50.00 211 Common Redpoll Acanthis flammea 2 100.00 212 Red Crossbill Loxia curvirostra 2 100.00 213 White-winged Crossbill Loxia leucoptera 1 50.00 214 Pine Siskin Spinus pinus 2 100.00 215 American Goldfinch Spinus tristis 2 100.00 216 Lapland Longspur Calcarius lapponicus 1 50.00 217 Snow Bunting Plectrophenax nivalis 2 100.00 218 Chipping Sparrow Spizella passerina 2 100.00 219 Clay-colored Sparrow Spizella pallida 1 50.00 220 Field Sparrow Spizella pusilla 2 100.00 221 Lark Bunting Calamospiza melanocorys 1 50.00 222 American Tree Sparrow Spizelloides arborea 2 100.00 223 Fox Sparrow Passerella iliaca 2 100.00 224 Dark-eyed Junco Junco hyemalis 2 100.00 225 White-crowned Sparrow Zonotrichia leucophrys 2 100.00 226 White-throated Sparrow Zonotrichia albicollis 2 100.00 227 Vesper Sparrow Pooecetes gramineus 1 50.00 228 Nelson's Sparrow Ammospiza nelsoni 1 50.00 229 Savannah Sparrow Passerculus sandwichensis 2 100.00 230 Song Sparrow Melospiza melodia 2 100.00 231 Lincoln's Sparrow Melospiza lincolnii 2 100.00 232 Swamp Sparrow Melospiza georgiana 2 100.00 233 Eastern Towhee Pipilo erythrophthalmus 2 100.00 234 Yellow-breasted Chat Icteria virens 1 50.00 235 Bobolink Dolichonyx oryzivorus 2 100.00 236 Baltimore Oriole Icterus galbula 2 100.00 237 Red-winged Blackbird Agelaius phoeniceus 2 100.00 238 Brown-headed Cowbird Molothrus ater 2 100.00 239 Rusty Blackbird Euphagus carolinus 2 100.00 240 Common Grackle Quiscalus quiscula 2 100.00 241 Ovenbird Seiurus aurocapilla 2 100.00 242 Northern Waterthrush Parkesia noveboracensis 2 100.00 243 Black-and-white Warbler Mniotilta varia 2 100.00 244 Prothonotary Warbler Protonotaria citrea 1 50.00 245 Tennessee Warbler Leiothlypis peregrina 2 100.00 246 Orange-crowned Warbler Leiothlypis celata 2 100.00 247 Nashville Warbler Leiothlypis ruficapilla 2 100.00 248 Common Yellowthroat Geothlypis trichas 2 100.00 249 American Redstart Setophaga ruticilla 2 100.00 250 Cape May Warbler Setophaga tigrina 2 100.00 251 Northern Parula Setophaga americana 2 100.00 252 Magnolia Warbler Setophaga magnolia 2 100.00 253 Bay-breasted Warbler Setophaga castanea 2 100.00 254 Blackburnian Warbler Setophaga fusca 2 100.00 255 Yellow Warbler Setophaga petechia 2 100.00 256 Chestnut-sided Warbler Setophaga pensylvanica 2 100.00 257 Blackpoll Warbler Setophaga striata 2 100.00 258 Black-throated Blue Warbler Setophaga caerulescens 2 100.00 259 Palm Warbler Setophaga palmarum 2 100.00 260 Pine Warbler Setophaga pinus 2 100.00 261 Yellow-rumped Warbler Setophaga coronata 2 100.00 262 Prairie Warbler Setophaga discolor 1 50.00 263 Black-throated Green Warbler Setophaga virens 2 100.00 264 Canada Warbler Cardellina canadensis 2 100.00 265 Wilson's Warbler Cardellina pusilla 2 100.00 266 Scarlet Tanager Piranga olivacea 2 100.00 267 Western Tanager Piranga ludoviciana 1 50.00 268 Northern Cardinal Cardinalis cardinalis 2 100.00 269 Rose-breasted Grosbeak Pheucticus ludovicianus 2 100.00 270 Indigo Bunting Passerina cyanea 2 100.00 271 Painted Bunting Passerina ciris 1 50.00 272 Dickcissel Spiza americana 1 50.00