T. Hofmann et al., FIRST BREEDING RECORD OF RED-BREASTED MERGANSER, MERGUS-SERRATOR, ON AXEL-HEIBERG ISLAND, NORTHWEST-TERRITORIES, Canadian field-naturalist, 111(2), 1997, pp. 308-309
A female Red-breasted Merganser with six young was observed on the riv
er flowing from Buchanan Lake into Mokka Fjord on Axel Heiberg Island,
Northwest Territories, on 9 August 1993. This is some 900 km north of
the northern edge of the known breeding range in eastern Canada for t
his species.