CHANGES IN PLUMAGE IN CANADA GOOSE GOSLINGS
This resource looks at the appearance and behaviour of two birds, the Canada goose and the sandwich tern, and mainly the former.
VIGILANCE BEHAVIOUR IN BARNACLE GEESE
This is a study of the vigilance behaviour of barnacle geese grazing in winter. The resource is designed to help students understand the importance of defined categories of behaviour and obtain experience in recording the frequency and duration of defined behaviours; understand the trade-off between feeding and vigilance; understand the advantage of group feeding in reducing vigilance costs.