“We found the packaging of one bird, a McChicken, as part of the nest of another bird,” he said. And then, in a deep, mud-covered layer of the nest, which emitted “a distinct canal smell ...

Each year, these birds typically build new, bowl-shaped nests using leaves, rushes and reeds ... “There may be way more data in a bird nest than you may realize,” Hiemstra tells Science.

The eagles at the U.S. Steel nest in West Mifflin are on egg watch — as are the hundreds of people who watch the livestream. Stella and her mate Irvin continue to sit on standby as their eaglets ...