The nesting method used by birds depends upon their size, location and diet. It also depends on the available nesting materials and the reproductive habits of the given bird species. Some do not build nests at all, but take advantage of existing structures for shelter and egg protection.
The most basic approach to nest construction is scraping. Scrape nests are used by ducks, many shorebirds, quail, pheasants, ostriches and several other species. These nests are shallow depressions dug into sand or soft soil and used to keep eggs in a single, safe place. Scrape nests are particularly useful in Arctic climates because they protect the eggs from freezing winds.
Cavity nests are another common type. Birds that build these nests use their bills to hollow out portions of trees, cacti, adobe structures and other pliable objects. Cavity nests protect eggs from severe weather conditions and from most predators. Species that build cavity nests include woodpeckers, tits, bluebirds, hornbills, some parrots and selected duck species.
Birds that build cup nests use a mixture of organic debris and saliva or mud to build bowl-shaped structures in trees, shrubs and beneath rocky outcroppings. According to the Cornell University Laboratory of Ornithology, cup nests are the preferred nest type for hummingbirds, swifts, flycatchers, blackbirds and other small birds.Learn More
Canadian geese and domesticated geese are both primarily herbivores. According to The Cornell Lab of Ornithology, their diets consist of grass, aquatic plants, grains and leaves. Although Canadian geese occasionally eat small fish, domesticated geese are not reported to do so.Full Answer >
Chickadees are small, lively North American birds that travel in pairs or small flocks. Their heads and throats are usually darker than the rest of their bodies.Full Answer >
There are 21 different species of cockatoos, but the types most commonly kept as pets include the bare-eyed, black palm, citron, Goffin's, Moluccan, rose-breasted, slender-billed, sulphur-crested and umbrella cockatoos. The smallest and easiest to care for species of cockatoo is the cockatiel.Full Answer >
The scientific name for the group encompassing modern birds is Aves. Aves is the only surviving branch of the dinosaur family tree. They are a side branch of the maniraptors, a group of bipedal feathery dinosaurs that included Velociraptor.Full Answer >