Web Results

en.wikipedia.org/wiki/Bird_egg

The default color of vertebrate eggs is the white of the calcium ... are made, but some birds, mainly passerines, produce colored eggs.

www.allaboutbirds.org/the-beauty-and-biology-of-egg-color

Jun 12, 2017 ... From the Summer 2017 issue of Living Bird magazine. Subscribe now. Fish do it. Frogs do it. Even insects lay eggs with color. But birds do it ...

www.sialis.org/nests.htm

Jun 11, 2016 ... Also see Nest ID Matrix (contents) and Egg ID Matrix (color, spots, etc.) ... You may be able to identify the nester by watching what birds go in ...

www.thespruce.com/how-to-identify-bird-eggs-387352

Apr 4, 2017 ... The habitat, size, shape and color of these eggs are all important for identification . Deryk Tolman. It can be exciting to find a wild bird's nest or ...

web.stanford.edu/group/stanfordbirds/text/essays/Color_of_Eggs.html

Bird eggs show an enormous diversity of colors. Some bird groups that are considered relatively "primitive," such as cormorants and pelicans, are thought to  ...

thebirdersreport.com/egg-and-nest-identification

Bird egg and nest identification with photos and comparisons. ... of and its dimensions; What the eggs look like, color, size, shape and how many eggs in the nest.

www.woodlandtrust.org.uk/blog/2016/05/identify-egg-shells

May 10, 2016 ... Because bird eggshells are made of calcium carbonate, the default colour is white. But other pigments can cause eggs to take on different ...

www.audubon.org/news/cracking-code-egg-coloration

Jun 15, 2015 ... The Western Foundation of Vertebrate Zoology's bird egg collection. ... scientists began to investigate the chemistry of bird eggshell color. In the ...

blogs.discovermagazine.com/seriouslyscience/2016/05/30/5415

May 30, 2016 ... While you might be most familiar with “robin's egg blue”, many species of birds lay blue-colored eggs. Why might this have evolved? Although ...