Our birds' eggs come in various sizes, shapes and colours, and if you're determined to identify your latest find, you will need a bird egg identification chart. Eggshell colour In general, bird egg shells are made of calcium carbonate and so the default colour is white. But other pigments can create different colours and patterns.
Birds that build their nests in trees and shrubs (like dunnock and blackbird) generally have blue or greenish eggs, either spotted or unspotted. The egg yolk color ranges from yellow to dark orange for all the birds. Eggs have characteristics related to the birds who lay them; hence, bird eggshell identification tells us which bird the egg belongs to.
If you also experience such questions, use the bird egg identification chart below to identify which birds the egg comes from. British Birds' Eggs British birds' eggs are found in a variety of shapes, sizes and colours. Although the default colour of a bird's egg is white due to the calcium carbonate from which the shell is made, other pigments can cause eggs to take on different colours and patterns.
Bird egg identifier Please use our bird egg identifier below to compare against any discarded or used shells you may find in your garden our elsewhere. If you find any egg shells not featured here, please post in the comments section below and share with everyone. The two basic colours for all species are blue or white when the shell is first put on.
Then, two more colouring steps occur as the egg moves down the oviduct. All three of these steps are. When the shell is deposited.
(white or blue) A yellow pigment is applied, giving the white egg a beige or brown colour. The eggs will turn darker blue if the basic colour is blue. If needed, more pigment is.
In general, bird egg shells are made of calcium carbonate and so the default colour is white. But other pigments can cause eggs to take on different colours and patterns. Learn how to identify bird eggs with our comprehensive guide.
Discover key features and find tips on tools for bird egg identification. A Guide to British Birds' Eggs By Emily Price March 1, 2025 Understanding British birds' eggs helps us appreciate bird diversity and conservation. Egg structure, size, and color vary between species.
For example, Moorhen eggs look different from Song Thrush eggs. These differences assist in identifying species and reflect environmental factors. Our bird egg identifier can help you discover what eggs you might have found in your garden or park, and about their nests.