The Canadian Field-Naturalist (E-Journal)
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Round-fruited St. John’s-wort (Hypericum sphaerocarpum, Hypericaceae) in Canada
Get PDFRound-fruited St. John’s-wort (Hypericum sphaerocarpum), a native North American herbaceous, perennial vascular plant, is reported from four sites in southern Ontario, Canada. All four sites are along abandoned railway lines. Although the rich association of native flora suggests native status at one site, H. sphaerocarpum is believed to be introduced elsewhere in its Canadian range in Ontario
Behaviour of a porcupine (Erethizon dorsatum) swimming across a small boreal stream
Get PDFThe swimming behaviour of North American Porcupine (Erethizon dorsatum) is largely unrecorded, even though much of its habitat is bisected by innumerable rivers and streams. Moreover, the literature is inconsistent regarding how readily porcupines take to the water and how well adapted they are for swimming. I observed a porcupine swimming across a relatively placid and shallow braid in the Klondike River (Yukon, Canada), after it had aborted three apparent attempts to swim at a relatively fast-flowing, deep channel upstream. This observation provides evidence of porcupine swimming across moving water and suggests that they may be reluctant to do so and selective of where they cross rivers and streams
Birds of Mansel Island, northern Hudson Bay
Get PDFA recent review of bird distributions in Nunavut demonstrated that Mansel Island, in northeastern Hudson Bay, is one of the least known areas in the territory. Here, current information on the birds of Mansel Island is summarized. A list published in 1932 included 24 species. Subsequent visits by ornithologists since 1980 have added a further 17 species to the island’s avifauna. The list includes 17 species for which breeding has been confirmed and 10 for which breeding is considered probable. The island seems to support particularly large populations of King Eiders (Somateria spectabilis) and Tundra Swans (Cygnus columbianus) and the most southerly breeding population of Sabine’s Gull (Xema sabini) and Red Knot (Calidiris canuta; probably)
"Seabird Colonies of British Columbia: A Century of Changes" by Michael S. Rodway, R. Wayne Campbell, and Moira J.F. Lemon, 2017. [book review]
No full text"Mountain Lions of the Black Hills: History and Ecology" by Jonathan A. Jenks, 2018. [book review]
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Minutes of the 140th Annual Business Meeting (ABM) of the Ottawa Field-Naturalists’ Club, 8 January 2019
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