. The Canadian field-naturalist. Natural history. September, 1919] The Canadian Field-Naturalist 57 journey southward, following roughly the route of the Trent Valley canal, and from there they doubt- less make longer flights to the south. That their journeys are not confined to the im- mediate vicinity of water was proved by our presi- dent one day when he was gardening with his cars open, and heard from one of his friends of the Kawartha district, a salute from the upper air, mak- ing the only record we have of the occurrence of this Tern in Middlesex county. AN IMPORTANT DISTINCTION BETWEEN
. The Canadian field-naturalist. Natural history. September, 1919] The Canadian Field-Naturalist 57 journey southward, following roughly the route of the Trent Valley canal, and from there they doubt- less make longer flights to the south. That their journeys are not confined to the im- mediate vicinity of water was proved by our presi- dent one day when he was gardening with his cars open, and heard from one of his friends of the Kawartha district, a salute from the upper air, mak- ing the only record we have of the occurrence of this Tern in Middlesex county. AN IMPORTANT DISTINCTION BETWEEN OUR TWO GOLDENEYES. (Clan^ula clangula americana and Clangula islandica.) By p. a. Taverner. Except in adult male plumage, the resemblance between the American Goldeneye and Barrow's Goldeneye is so close as to cause considerable con- fusion in identification. Adult males, the American with its round facial spot against the green-black head and Barrow's with a crescentic spot of purple black are distinctive and need never be RARROW'S GOLDENEYE. The females are so nearly alike as to be separable with difficulty. Various plumage analysis of the two species have been worked out but the one really satisfactory distinction seems to be in the size and shape of the bill which shows the only constant character for all plumages. Even in this feature the occurrence of poorly developed juveniles is a dis- turbing factor. Barrow's Goldeneye has a decidedly shorter, narrower and more stumpy bill than the American Goldeneye. The difference, however, is one that it is difficult to carry in mind and can only be certainly perceived when specimens are directly compared. The male of the year is almost as difficult as the female to diagnose until traces of the adult head coloration begin to show, when the problem is im- mediately simplified. One distinction between these plumages has been pointed out by Major. Please note that these images are extracted from scanned page images that ma
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