Bluebird Eggs. Typically bluebirds lay fewer eggs in a clutch later in the season, as you observed. The number of broods depends on many factors, including weather and food supply.

Volunteers at Maybury State Park keep an eye on bluebird nesting boxes, watching for predators, counting eggs and fledglings.

On a fine Monday morning in May, a bluebird lays her first egg. She produces another one the next day, another on Wednesday and her fourth and last blue egg is added to her nest on Thursday ...

European starlings, an invasive species in the U.S., lay blue eggs often mistaken for those of bluebirds or robins. Unlike native birds, starlings outcompete local species and are not protected by ...

I let down the front wall of the bluebird house, the gateway to the inside of the box, and saw four eggs – three blue and one white – in the tiny nest woven from grasses. Oh, wow! The previous ...

In 1934 a song called “The Bluebird of Happiness” with lyrics by Edward Heyman hit the airways to popular acclaim. Today, a Chester County woman, Marilyn Michalski of Phoenixville, can lay ...

It is best to leave bluebird eggs alone until the babies have hatched or the eggs are clearly no longer viable. By Joan Morris, Correspondent. UPDATED: June 9, 2025 at 9:06 AM PDT.

BIRDIE THIRTY: "Not 1, Not 2, Not 3, But 4 Eastern Bluebird Eggs" - EWN at 7:30am on 6-15-2025 Updated : Jun. 15, 2025 at 8:08 AM EDT Thanks to the beauty of time-lapse, we can see this Eastern ...

Naturalists and volunteers at Erie Bluffs State Park check bird houses each week this time of year to chart nesting activity.

As for the sparrows, the male will kill young bluebirds and eat their eggs, and can sneak into a bluebird nesting box. They're not welcome, however, and their nests are removed from the boxes at ...

With that she removed the starling egg and disposed of it in her trusty trash bag. “As committed birders we also learn to distinguish between different egg sizes, colors, and textures.