What are nomadic birds?

Answer 1

Nomadic Migration is when a group of nomads (people who do not live in a permanent home) move. They they move accoriding to season, animal herds, or due to movement of other resources so that they live. A good example would be the Plains Indians who followed buffalo herds.

Answer 2

Differing from migratory birds, nomadic birds "follow their food source", which depends either on rain in arid and semi-arid regions or on irregular fruiting, seeding or flowering in schlerophyllous forests and woodlands.

Many desert birds in Australia and Africa are nomads without permanent territories, as are nectar-feeding honeyeaters in mesic parts of Australia and some finches in the northern taiga that depend on conifer trees that seed very erratically since their cycles are nonannual.

Nomadic birds have a number of adaptations to deal with their lifestyles:

1. opportunistic breeding: desert birds can breed in any month and taiga finches can reproduce in colder conditions than almost any other living organism
2. short incubation periods so that eggs hatch rapidly after a food source becomes available. Desert chats in Australia and larks in Africa can hatch their eggs as little as ten days after the last egg is laid
3. multiple brooding: in a good year many nomadic birds can lay four clutches, so that though nomads' clutch sizes are medium-sized (three or four eggs) and relatively insensitive to latitude, they can have as high overall fecundity as high latitude residents that lay ten eggs per clutch
4. unusual water intake: some desert birds in Australia never drink and nomadic taiga finches like the crossbill can drink snow