Nesting Ecology - A nest is a structure made by birds to hold eggs and to provide shelter. There is great diversity in the types of nests that birds build and where they are placed, each suited to particular habitat or reproductive requirements.
Brood Parasitism - Birds are well known for their parental care, patiently incubating their eggs and then bringing food to their young until they are old enough to look after themselves. However, birds known as brood parasites, lay their eggs in the nests of other birds and do not provide any parental care for their own offspring.
Migration - It has been demonstrated that birds rely on several different cues – visual landmarks, geomagnetic field, solar compass, skylight polarization pattern/stars, and olfaction - for their orientation and navigation across vast stretches of land.