What bird is that.
Backyard bird egg identification.
We have photos song recordings in depth entries and more to help bird watchers correctly identify the birds they spot.
Then you can later check your field guide to try and identify the bird armed with all the information you need.
Consult our bird identification guide to id mystery birds in the backyard and beyond.
This features pictures and details of all the most common backyard birds of north america.
In general bird egg shells are made of calcium carbonate and so the default colour is white.
Bird species use different building materials to create nests of various shapes and sizes and the eggs they lay differ in shape markings colors and size.
Learn how to identify birds eggs with our expert guide including which species it came from and where you are most likely to see birds eggs.
These traits can help you identify the species even if the bird itself isn t present.
Why bird egg identification matters.
Predators such as foxes or magpies may carry them away as do parent birds often to help conceal the location of vulnerable babies.
Eggs can also be glossy or have a duller matte finish.
The female incubates the eggs for 12 to 14 days and the young leave the nest about 11 to 19 days after hatching.
Some wild backyard bird eggs have ridges and ripples.
The eggs are a pale bluish green with few black spots and a smooth somewhat glossy surface.
Western bluebird ash throated flycatcher tree swallow house sparrow oak titmouse house finch american kestrel ruby throated hummingbird american robin carolina wren northern cardinal and northern mockingbird.
The surface of eggs laid by wild backyard birds have a remarkably wide variety of textures.
Many of them are smooth but just as many can be covered in tiny dimples or feel pebbly.
Birds that build their nests in trees and shrubs like dunnock and blackbird generally have blue or greenish eggs either spotted or unspotted.
Eggs are laid from february through august two or more broods per year with 2 to 6 eggs per brood.
The audubon bird guide is a free and complete field guide to more than 800 species of north american birds right in your pocket.
Eggshells don t just fall out of a nest.
Birders are naturally curious to identify the birds they see and identifying bird eggs is part of that curiosity for birdhouse landlords identifying eggs can help them understand which birds prefer their houses and they can adjust the foods they offer and how bird friendly their yard is to better suit each feathered family.
But other pigments can create different colours and patterns.
Or you can use our backyard bird identification guide below to help you.
