The highly pathogenic avian influenza was found in a blue-winged teal and several black vultures. Here's where.

For more than 1,000 years, ancient people built terraces, dams, pyramids and mounds in central Mexico. One of these sites is called Monte Albán, and it was carved from the mountain outside Oaxaca.

Plus: How to avoid weeds from feeder seeds, what makes hummingbirds so feisty, and cleaning hummingbird feeders.

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Billionaire Illinois Gov. Pritzker wins blackjack pot of $1.4M in Las Vegas It’s a bird! It’s a plane! It’s a chemtrail? A new conspiracy theory finds traction at Kennedy’s HHS ...

The birds have been slow to return to Western Massachusetts, in part because the purple martin's natural habitat is being decimated.