Backyard Secrets–WHITE EASTERN BLUEBIRD EGGS?

Anybody that maintains and regularly checks eastern bluebird nest boxes in their yard can tell you that bluebird eggs are normally blue. However, from time to time, bluebirds do lay white eggs. In fact, biologists estimate that approximately 5 percent of all bluebird eggs are white.

Typically, if a female eastern bluebird lays white eggs, all of her eggs will be white.

However, on rare occasions, bluebird clutches will contain a combination of white and blue eggs. It is believed that the appearance of a white egg in a nest of blue eggs, or a blue egg showing up in a nest of white eggs occurs when a second female deposits an egg in a another female’s nest. This behavior is called dump nesting.

I have never seen a white bluebird egg. Have you?

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s