A 16-year Record of Summer Birds on Truelove Lowland, Devon Island, Northwest Territories, Canada
An annual census of adult birds was conducted on the 43 sq km Truelove Lowland, Devon Island, N.W.T., Canada, in the summers of 1970-73 and 1978-89. Forty-three species were seen during 16 years. Of these, 18 species bred regularly on or immediately adjacent to the lowland and 10 were occasional bre...
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The Arctic Institute of North America
1990
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ftunivcalgaryojs:oai:journalhosting.ucalgary.ca:article/64676 2023-05-15T14:19:13+02:00 A 16-year Record of Summer Birds on Truelove Lowland, Devon Island, Northwest Territories, Canada Pattie, Donald L. 1990-01-01 application/pdf https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64676 eng eng The Arctic Institute of North America https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64676/48590 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64676 ARCTIC; Vol. 43 No. 3 (1990): September: 201–300; 275-283 1923-1245 0004-0843 arctic birds numbers census populations breeding range oiseaux arctiques nombres recensement aire de reproduction info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 1990 ftunivcalgaryojs 2022-03-22T21:21:53Z An annual census of adult birds was conducted on the 43 sq km Truelove Lowland, Devon Island, N.W.T., Canada, in the summers of 1970-73 and 1978-89. Forty-three species were seen during 16 years. Of these, 18 species bred regularly on or immediately adjacent to the lowland and 10 were occasional breeders. In addition 15 species were visitors. The highest annual number for most breeding species was two to three times that of their lowest numbers, but some regular breeding species had far greater extremes. Extensions of the breeding range of Pacific Loon (Gavia pacifica), Purple Sandpiper (Calidris maritima), Wheatear (Oenanthe oenanthe), and Water Pipit (Anthus spinoletta) to Devon Island are reported. It is suspected that Hoary Redpolls (Carduelis hornemanni) and Red Knots (Calidris canutus) also nested there once each. A coefficient of detectability is presented for the 16 most frequently seen species. Synchronous fluctuations in Snow Bunting (Plectrophenax nivalis) and Lapland Longspur (Calcarius lapponicus) populations were observed. A possible replacement of Black-bellied Plovers (Pluvialis squatarola) by Lesser Golden-Plovers (P. dominica) was detected. An abrupt disappearance of all colonies of breeding Arctic Terns (Sterna paradisaea) from the lowland was seen in 1989. Article in Journal/Newspaper Arctic Arctic birds Arctic Arctique* Calidris canutus Calidris maritima Devon Island Northwest Territories Plectrophenax nivalis Purple Sandpiper Snow Bunting Sterna paradisaea Lapland University of Calgary Journal Hosting Arctic Canada Devon Island ENVELOPE(-88.000,-88.000,75.252,75.252) Northwest Territories Pacific ARCTIC 43 3 |
institution |
Open Polar |
collection |
University of Calgary Journal Hosting |
op_collection_id |
ftunivcalgaryojs |
language |
English |
topic |
arctic birds numbers census populations breeding range oiseaux arctiques nombres recensement aire de reproduction |
spellingShingle |
arctic birds numbers census populations breeding range oiseaux arctiques nombres recensement aire de reproduction Pattie, Donald L. A 16-year Record of Summer Birds on Truelove Lowland, Devon Island, Northwest Territories, Canada |
topic_facet |
arctic birds numbers census populations breeding range oiseaux arctiques nombres recensement aire de reproduction |
description |
An annual census of adult birds was conducted on the 43 sq km Truelove Lowland, Devon Island, N.W.T., Canada, in the summers of 1970-73 and 1978-89. Forty-three species were seen during 16 years. Of these, 18 species bred regularly on or immediately adjacent to the lowland and 10 were occasional breeders. In addition 15 species were visitors. The highest annual number for most breeding species was two to three times that of their lowest numbers, but some regular breeding species had far greater extremes. Extensions of the breeding range of Pacific Loon (Gavia pacifica), Purple Sandpiper (Calidris maritima), Wheatear (Oenanthe oenanthe), and Water Pipit (Anthus spinoletta) to Devon Island are reported. It is suspected that Hoary Redpolls (Carduelis hornemanni) and Red Knots (Calidris canutus) also nested there once each. A coefficient of detectability is presented for the 16 most frequently seen species. Synchronous fluctuations in Snow Bunting (Plectrophenax nivalis) and Lapland Longspur (Calcarius lapponicus) populations were observed. A possible replacement of Black-bellied Plovers (Pluvialis squatarola) by Lesser Golden-Plovers (P. dominica) was detected. An abrupt disappearance of all colonies of breeding Arctic Terns (Sterna paradisaea) from the lowland was seen in 1989. |
format |
Article in Journal/Newspaper |
author |
Pattie, Donald L. |
author_facet |
Pattie, Donald L. |
author_sort |
Pattie, Donald L. |
title |
A 16-year Record of Summer Birds on Truelove Lowland, Devon Island, Northwest Territories, Canada |
title_short |
A 16-year Record of Summer Birds on Truelove Lowland, Devon Island, Northwest Territories, Canada |
title_full |
A 16-year Record of Summer Birds on Truelove Lowland, Devon Island, Northwest Territories, Canada |
title_fullStr |
A 16-year Record of Summer Birds on Truelove Lowland, Devon Island, Northwest Territories, Canada |
title_full_unstemmed |
A 16-year Record of Summer Birds on Truelove Lowland, Devon Island, Northwest Territories, Canada |
title_sort |
16-year record of summer birds on truelove lowland, devon island, northwest territories, canada |
publisher |
The Arctic Institute of North America |
publishDate |
1990 |
url |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64676 |
long_lat |
ENVELOPE(-88.000,-88.000,75.252,75.252) |
geographic |
Arctic Canada Devon Island Northwest Territories Pacific |
geographic_facet |
Arctic Canada Devon Island Northwest Territories Pacific |
genre |
Arctic Arctic birds Arctic Arctique* Calidris canutus Calidris maritima Devon Island Northwest Territories Plectrophenax nivalis Purple Sandpiper Snow Bunting Sterna paradisaea Lapland |
genre_facet |
Arctic Arctic birds Arctic Arctique* Calidris canutus Calidris maritima Devon Island Northwest Territories Plectrophenax nivalis Purple Sandpiper Snow Bunting Sterna paradisaea Lapland |
op_source |
ARCTIC; Vol. 43 No. 3 (1990): September: 201–300; 275-283 1923-1245 0004-0843 |
op_relation |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64676/48590 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64676 |
container_title |
ARCTIC |
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43 |
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3 |
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1766290818876833792 |