Blue Bird Eggs With Brown Spots Birds that build their nests in trees are more likely to have blue or green eggs while those who build their nests near the ground usually produce brown or speckled eggs to help with camouflage.

Blue bird eggs with brown spots The eggs are slightly glossy white or faintly tinted greenish or grayish.

Blue bird eggs with brown spots. Egg camouflage is less important because the egg is usually well hidden within the nest. These inks are added to the freshly formed shell in the last few hours of production. They are marked with brown lavender or black streaks and spots. Biliverdin is the molecule that produces the blue and green pigment in eggshells.

Passerines tend to lay coloured eggs. And a stressed parent may be so wigged out. It s illegal to disturb an active nest if it belongs to a native species. The black bird lays a blue egg with brown speckels.

Very variably marked with spots speckling or small blotches of gray blue gray greenish gray purplish gray black brown or purplish brown. It lays smooth shiny eggs marked with red and brown spots. Blackbird eggs are smooth and glossy 29 x 22mm in size. This photo of their nest and eggs was sent to me by robert from kansas.

What to notice when you see a wild bird egg. Other bird eggs have protoporphyrin visible as spots and speckles. Birds that lay their eggs in the open and on the ground rely on camouflage so usually produce brown or speckled eggs. The nest is similar to a song thrush with a backbone of twigs a plaster of mud and a lining of fine grass.

The osprey is a bird of prey found across the world. Eggs within a single clutch can vary a lot in color. They re green blue or completely blue eggs with heavy red brown freckles that can make them seem brown overall. Eggs of hole nesting birds are generally white or pale blue so that the parent birds can easily locate them and avoid breaking them.

Don t ever disturb a nest with eggs or a brooding parent. Because they aren t in a deep nest they are slightly pointed to minimize rolling. The higher the concentration biliverdin the bluer the egg. Before moving on to characteristics that can help you identify the owners of different bird eggs a few words of caution.

The eggs are around 2 6 to 3 inches long.