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.

The wren, meanwhile, continued his rounds, moving from nest box to nest box, laying claim to them all. A female wren, if one ...

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 ...

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 ...

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.

The eggs in this Eastern bluebird nest will hatch 10-14 days after they were laid. After hatching, the newborn babies will fledge within 16-21 days.

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.