Kingfisher Habitats
In temperate regions, kingfishers inhabit clear, slow-flowing streams and rivers and lakes with well-vegetated banks. Kingfishers are often found in scrubs and bushes with overhanging branches close to shallow open water in which it hunts. In winter, the kingfisher is more coastal, often feeding in estuaries or harbours and along rocky seashores.
Kingfisher Diet
Kingfishers feed on aquatic insects such as dragonfly larvae and water beetles and small fish ranging from 1 inch to 5 inches long, such as sticklebacks, minnows, small roach and trout. About 60% of food items are fish. In winter, kingfishers feed up on crustaceans including freshwater shrimps. The Common Kingfisher hunts from a perch 1 – 2 metres (3 – 6 feet) above the water, on a branch, post or riverbank with its beak pointing downwards as it searches for prey.
The Kingfisher bird bobs its head when food is detected to gauge the distance and plunges steeply down to grab its prey usually no deeper than 25 centimetres (19 inches) below the surface of the water.
The wings are opened under water and the open eyes are protected by the transparent third eyelid. The bird rises beak-first from the surface and flies back to its perch. At the perch the fish is adjusted until it is held near its tail and beaten against the perch several times. Once dead, the fish is swallowed head-first. A few times each day, a small greyish pellet of fish bones and other indigestible remains is regurgitated.
Kingfisher Behaviour
Like all kingfishers, the Common Kingfisher is highly territorial. Since it must eat around 60% of its body weight each day, it is essential to have control over a suitable stretch of river. It is solitary for most of the year, roosting alone in heavy cover. If another kingfisher enters its territory, both birds ‘display’ from perches and fights may occur. One bird will grab the others beak and try to hold it under water. Pairs form in the autumn but each bird retains a separate territory, generally at least 1 kilometre long.
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