Friday, 25 April 2014

Wagtails-Yellow


All wagtails are dainty, delicate birds but the yellow is the most graceful of them all. When spring-time parties appear in the marshes the males are wonderfully brilliant. Running nimbly within inches of grazing cattle, their slight bodies are often hidden, but bright colours, golden as dandelions, catch the eye. Then for no apparent reason, birds rise suddenly and head for the nearest trees. After perching a few moments, they drop back one by one into the marsh. Here, with flirting tail and a to-and-fro motion of the head each bird hunts insects disturbed by the stock. Depending on weather conditions, large groups of spring migrant yellow wagtails may halt briefly on the coast. I once chanced upon 80 at Salthouse. An hour later all had departed westward. On another occasion between 400 and 500 were seen briefly at Cley. Display flights between rival cocks occupy much of the birds' time on the breeding grounds. You may see two males dancing in the air with fluttering wings, pecking and clawing at each other. Courtship ceremonies are delightful: the cock slowly circles the hen with puffed-out breast feather, depressed wings and fanned tail. At times he hangs suspended in the air, hovering with widely spread tail.
» Length: 5.5 inches
» Slender bill
» Yellow underparts
» Olive back
» Dark wings with some white edges
» White supercilium
» Gray head
» Black tail with white outer tail feathers
» Dark legs
» Sexes similar
» Juveniles have duller plumage, paler underparts and dark malar streaks connecting across the upper breast
» Breeds in Alaska

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