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Birds and water |
Birds and water
Many people put food out for birds, but fewer provide a regular supply of clean water. Birds need water for drinking and bathing. Water is particularly important during the winter when natural supplies may be frozen, and in dry weather during the summer. Birds get the liquid they need from their food, and by drinking. Many insectivorous birds get most of their water from food, while seed-eating birds have a dry diet and they need to drink more. Since birds have no sweat glands, they need less water than mammals. However, they do lose water through respiration, and in their droppings. Most small birds need to drink at least twice a day to replace the lost water. Water is freely available to birds at all shallow edges of ponds and streams. Woodland birds may drink water droplets on leaves. Aerial species such as swallows and swifts will swoop down onto a water body and scoop up a billful while in flight. Most birds drink by dipping their bill in water and throwing their head back to swallow. Pigeons and doves are able to immerse their bills and drink continuously. Water to bathe in is equally important, especially in winter. It is essential that birds keep their feathers in good condition, and bathing is an important part of feather maintenance. Dampening the feathers loosens the dirt and makes the feathers easier to preen. When preening, the bird carefully rearranges the feathers and spreads oil from the preen gland so they remain waterproof and trap an insulating layer of air underneath. |
Flower borders in front of RSPB The Lodge reserve, Bedfordshire - Andy Hay (rspb-images.com, Ref: 1999_0503_009 )
Family Birdwatching through living room window - Andy Hay (rspb-images.com)
Nestbox on tree, RSPB Wood of Cree reserve - Andy Hay (rspb-images.com, Ref: D_2006_11968_0009 )