Bird nest type and nesting behaviour in birds

this slide provides a general overview on bird nest types and functions of nests.

1. Submitted to- Dr.A.Hussain Mir Submitted by- Navdeep Singh Section- B1724 Regd.No .- 11700891 Topic – Nest Types and Nesting Behavior In Birds

2. A bird nest is the spot in which a bird lays and incubates its eggs and raises its young. Although the term popularly refers to a specific structure made by the bird itself Bird nest

3. For most birds, when a male and female form a breeding pair nest building activities will follow. A nest site is first selected and nest building begins. This can involve both birds as a pair or either sex alone. Different species of birds build different nests. Some nests are very simple constructions, whilst others are more complex.

4. Birds usually only build nests for holding their eggs and rearing chicks Birds build nests To lay their eggs in and keep them safe To incubate their eggs To raise their chicks To protect their eggs and chicks from predators To protect their eggs and chicks from adverse weather conditions Why do birds build nests?

5. Nests are built ; in hedges, bushes and trees directly on the ground in holes in trees in reeds by rivers and lakes in tunnels in riverbanks and cliffs on cliff ledges on and in buildings on ledges and walls and under the eaves of roofs in nesting boxes Where do birds build nests?

6. These materials include ; • sticks and twigs grasses and reeds leaves mosses and lichens seaweed mud feathers bird saliva fur and hair from other animals plant down and seed heads from grasses and reeds cocoon silk and silk from spiders man-made materials. What materials do birds use to build their nests?

7. to construct the nest to hold it together for insulation, to quicken nest incubation for comfort to camouflage the nest. The materials are used:

8. Types of bird nest

9. The nest is made from stalks of grass. The stalks have been bent to make the nest. E.g. Sparrow Cup shaped nest

10. Some birds are very skilful at weaving nests. They use grass or reeds to weave complex nests. The Reed Warbler is a bird that weaves its nest and attaches it to reed stems. E.g. Weaver Bird Woven nest

11. Brood parasites are organisms that rely on others to raise their young. The strategy appears among birds, insects and some fish. E.g. cuckoo bird Brood parasitism No nest/ Brood parasitism

12. Some birds make very simple flat nests out of twigs. These nests are called platform nests. Birds drop sticks and twigs on the top of each other to make this type of nest. Large birds such as Rooks, Magpies and Crows make these types of nest. Platform nest

13. Pigeons are well known for building their nests in unusual places. These places include watering cans, post boxes and street lights, godowns , pillars . Unusual places

14. Some birds, such as Eagles return to their nests and re-use them. The nest of a Golden Eagle is called an eyrie . It is made of sticks and can become very large. When Eagles return to their nests to re-use them, they simply add more sticks to them Re-using nests

15. Some birds like parrots lay their eggs in the hollow trees. Eggs are cared and hatched inside the hollow tree parts. Young ones are cared and raised in the same place. E.g. Parrots Holes in trees

16. A scrape is a very simple type of nest. It is simply a slight hollow scraped in the ground by a bird using its feet or its abdomen . the hollow is lined with grass to provide a cushion between the ground and the eggs. Birds that make scrapes include Oystercatcher, Ringed Plover, Lapwing, Curlew, Common Tern, Snowy Owl, Red Grouse, and Black Grouse. Scrapes

17. Scrapes lay eggs on lands or either in the nest as depending on the location. E.g. Red- wattled lapwing

18. A Kingfisher uses its beak and feet to dig a tunnel in river bank. It makes its nest at the end of the tunnel. Tunnels

19. Thank You