"tundra swan" - 1 õppematerjal

Tundra swans

Tundra swans Tundra swans ● Whooper swan, Bewick´s swan and mute swan (laululuik, väikeluik, kühmnokk-luik)  Whooper swan ● Large white swan (bigger than bewick) ● Lenght – 140 to 165 cm ● Deep honking call and powerfull fliers ● Require large areas to live in ● Adult birds – feathers entirely white, black feet, mostly black bill ● Pens (females) – slightly smaller than cobs (males) ● Immatures – white mixed with some dull grey feathering; bills – black, large dirty-pink patch ● In Estonia first nesting - 1979 Whooper swan  Behaviour of whooper swan ● Pair for life, cygnets stay with them all the winter ● Breffered breeding habitat – wetlands ● Both build the nest ● Male will stand guard over the nest while female incubates ● 4 to 7 eggs  Influence of whooper swan ● Much admired in Europe ● National bird ...