. The Canadian field-naturalist. 214 The Canadian Field-Naturalist Vol. 86 -6^ <<'. Figure 1. Distribution of swans wintering on Vancouver Island in 1970-71. fied as Trumpeters. Similarly, wintering swans from Vancouver Island which have come into the possession of other biologists have been identified as Trumpeters. Cowan (1946) re- ported on the death of a Trumpeter near Quali- cum, and Munro (1949) regarded thirteen swans which died near Nanaimo as Trumpeters. In addition Benson (1964) investigated the death of seventeen swans in the Campbell River area, and recorded them as Trumpeter
. The Canadian field-naturalist. 214 The Canadian Field-Naturalist Vol. 86 -6^ <<'. Figure 1. Distribution of swans wintering on Vancouver Island in 1970-71. fied as Trumpeters. Similarly, wintering swans from Vancouver Island which have come into the possession of other biologists have been identified as Trumpeters. Cowan (1946) re- ported on the death of a Trumpeter near Quali- cum, and Munro (1949) regarded thirteen swans which died near Nanaimo as Trumpeters. In addition Benson (1964) investigated the death of seventeen swans in the Campbell River area, and recorded them as Trumpeters. The large size of most swans observed by us in the wild also suggested that they were Trumpeters. There is evidence (Hansen et al. 1971) to suggest that Whistling Swan cygnets lose their grey plumage considerably earlier than Trum- peter Swan cygnets. Our experience suggests that on Vancouver Island the majority of cyg- nets are still in grey plumage at the time of the northward migration (Table 1), indicating that they are Trumpeters. Distribution ranges given by standard orni- thological works also indicate that the Van- couver Island swans would be mainly Trum- peters. Peterson (1961) states that Whistlers winter in California, Oregon, Utah and Wyom- ing, and Godfrey (1966) cites their winter range as ". . the Pacific and Atlantic coast of the United States from Washington to Cali- fornia and from Maryland to North ; Guiguet (1958) reports however that three Whistlers wintered at Victoria in 1952, and cautions that while most swans seen wintering on the southern coastlines of British Columbia are regarded as Trumpeters, "... correct identification requires close scrutiny, rather than an assumption of species based on time and ;. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the origina
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