https://en.wikipedia.org/wiki/Nest

Bird nests vary from simple depressions in the ground known as scrapes ... The largest nest on record was made by a pair of bald eagles.

https://www.dkfindout.com/us/animals-and-nature/birds/birds-nests/

Some gather sticks, grass, and leaves, while others use tree branches, mud, stones, or even their own saliva. Many nests are made of any materials the bird can ...

https://www.worldatlas.com/articles/how-many-types-of-nests-are-built-by-birds.html

Apr 25, 2017 ... Bird nests are not all the same as various bird species have different types of nests made from an assortment of materials.

https://www.rspb.org.uk/birds-and-wildlife/natures-home-magazine/birds-and-wildlife-articles/features/home-sweet-home/

Birds only spend a tiny part of the year building nests, yet they know how to build a ... This begins with a cup and dome made of moss and stuck together with ...

https://insider.si.edu/2015/04/bird-nests-variety-is-key-for-avian-architects/

Apr 20, 2015 ... A bird's nest is a small bowl-shaped collection of twigs and straw built on ... return to the same nest each year, which is typically made of sticks, ...

https://nestwatch.org/learn/general-bird-nest-info/nesting-cycle/

For more information about the nesting cycles of individual birds, visit our guide ... in trees, in burrows, on the sides of cliffs, in and on man-made structures, etc.

https://www.youtube.com/watch?v=KpDCQBPPTFM

May 10, 2016 ... Help your child learn about nests and their builders, as they observe a hummingbird building its nest. **More info & videos below** Text ...

http://www.birdsandblooms.com/birding/attracting-birds/bird-nesting/8-different-bird-nests-how-spot-them/

Learn about different housing styles and where various bird species choose to set ... Rolf Nussbaumer Eagles' nests are made of sticks with soft materials, like ...

http://www.bbc.com/earth/story/20150307-the-16-most-amazing-bird-nests

Mar 7, 2015 ... This nest is made exclusively out of the bird's saliva. It is built in layers, usually over protruding rocks on inclined walls of a dark sea cave.

https://www.youtube.com/watch?v=fqgPmnW8yCU

Apr 20, 2010 ... A robin builds a nest in a crab apple tree. ... Wild Bird Nests Making Full Process - Baya Weaver Bird Nest/House Build Up In Palm Tree ...