Bald eagles nests are platforms made of sticks, added on to each year, they sometimes reach up to a full tonne in weight. These nests are the largest of any bird in North America. They can attain a depth of 13 feet deep and 8 feet across (side to side). They prefer to nest in large tree but will build in a sheltered area on the ground where no trees are available.
Grebes build the nests in shallow water and are often anchored at one or two points, but they are basically floating on the water. The Jacanas build nests which often sink into the water while the bird is sitting on it. Three species of Marsh Terns (eg, the Black Tern, Chilodonias niger) build nests of broken reeds in water up to 4 ft deep. These nests are sometimes anchored to nearby vegetation. Resource: http://www.earthlife.net/birds/nests.html
They make their nests by weaving fine grasses. The nest is in a cup shape.
Hummingbirds build tiny, cup like nests, which are attached to tree limbs with spider webs and saliva.
Do mean the American Robin in North America? If so, they have a well-made cup of mud reinforced with grass and twigs, and lined with softer grasses. It is placed in a tree or on a ledge or windowsill.
Ma and Pa eagle build a large nest consisting of a structural understory of twigs and limbs. The nest is usually high up in a tree, sometimes on a cliff, or even on the ground, but generally the higher the better. The nest has a bowl-like depression in the center. The parents fill the depression with grass and straw to make a level surface, and in the middle of that they excavate a smaller cup. Bald eagles re-use their nests season after season, and when one of a pair dies, the other will take on a new mate from among the unmated younger eagles. Some very large nests are believed to have been occupied for hundreds of years continuously. The female settles on the cup and lays her egg into it. You can see this happen on various webcams that have been installed at bald eagle nests; if you are lucky enough to actually witness egg laying, all you will see is that the female gives a little shrugging wiggle. Once the first egg is laid, it's incubated continuously until it hatches, with Ma and Pa taking turns. If more than one egg is laid in a season, the second and (very rarely) third eggs are laid in the same cup at intervals of about three days. The parents guard the eggs at all times, and take care to turn the eggs with their beaks from time to time. The eggs hatch about 35-40 days after they are laid, and they hatch in the same order, with a few days delay between each one.
Common ravens generally roost on cliff ledges or in large trees but have also established nests on power-lines, in urban areas, and on billboards. Their nests are cup shaped and made of twigs. A female raven will lay 3 - 7 eggs in the nest and incubates them for about 18 days.
Dunnarts, mouse-sized marsupials of Australia, build small, cup-shaped nests lined with leaves in the centre of clumps of spinifex or other grasses, or within hollow logs, clumps of sedges or even grass trees . Spinifex is a sharp, needle-like grass that grows in the arid and semi-arid plains of Australia, and it protects the dunnart from predators during the day. Some species dig burrows, or build their nests under timber or within rock crevices.
The home of a robin is called a nest. Robins typically build their nests in trees, shrubs, or on ledges, using materials like grass, twigs, and mud. The nests are usually cup-shaped and provide a safe place for the female to lay her eggs and raise her young.
Do mean the American Robin in North America? If so, they have a well-made cup of mud reinforced with grass and twigs, and lined with softer grasses. It is placed in a tree or on a ledge or windowsill.
Bulbuls typically build their nests in shrubs or trees, often choosing dense foliage for protection from predators. They construct their nests using twigs, grass, and other plant materials, creating a cup-like structure. The location and materials can vary depending on the specific species and their habitat preferences.
House martins and swallows are known for building cup-shaped nests out of mud and grass, typically under the eaves of buildings or on cliffs. They are colonial nesters, meaning they often build their nests close to each other in groups. The nests are usually lined with feathers and other soft materials, and the birds return to the same nest year after year.
American goldfinches build cup-shaped nests, typically using grasses, plant down, and spider silk for construction. They often place their nests in shrubs or trees, usually at a height of 3 to 10 feet off the ground. The nests are typically well-camouflaged to protect against predators. Goldfinches often reuse nesting sites in subsequent years.