Technological and theoretical advances over the past two decades have allowed researchers to quantify eggshell color in ways that were not previously possible. However, differences among studies in ...

We now have eggs in our bluebird nest. My wife Cindy discovered three eggs when she inspected our backyard box this week. Also, these eggs are white, which is unusual for bluebirds. Other WRAL Top ...

Iowa Writers 'Collaborative. Linking Iowa readers and writers. 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 ...

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. Nearly ...

Spring migration is over. It’s now prime nesting time for Georgia’s songbirds, most of which are incubating eggs or tending babies. Several year-round birds — bluebirds, cardinals, Carolina chickadees ...

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 law ...

Eastern bluebirds are not really blue — it's the way light waves interact with their feathers. But they are a part of Michigan's natural heritage and now that it's nesting season, they can be spotted ...

Jim Marshall doesn’t consider himself a “serious birder.” But when it comes to nurturing Fort Worth’s bluebird population, there is no one with more experience or knowledge than Marshall, who leads a ...

The signs have been showing up for a couple of weeks: tulips and daffodils, forsythia and redbud, dogwood and pear blossoms rivaling the snow-white clouds in the sky, and even the pesky chickweed. But ...

A little one-ounce blue, orange and white bird is a good news environmental story, for a change. Amid what seems like never-ending doom-and-gloom reports about climate change, biodiversity loss, ...