<Li> Vancouver Canada goose, B. c. fulva </Li> <Li> Dusky Canada goose, B. c. occidentalis </Li> <Li> Lesser Canada goose, B. c. parvipes </Li> <P> The distinctions between the two geese have led to confusion and debate among ornithologists . This has been aggravated by the overlap between the small types of Canada goose and larger types of cackling goose . The old "lesser Canada geese" were believed to be a partly hybrid population, with the birds named B. c. taverneri considered a mixture of B. c. minima, B. c. occidentalis, and B. c. parvipes . The holotype specimen of taverneri is a straightforward large pale cackling goose however, and hence the taxon is still valid today and was renamed "Taverner's cackling goose". </P>

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