A new study shows the species is in serious trouble.

BIRDS
The prehistoric avians weren't able to fly, but they were able to kill.
The inside scoop on birds that use tools, have built-in grooming devices, and even fart strategically.
Filming the Alfred Hitchcock classic was a harrowing experience for its stars, particularly Tippi Hedren.
The rare chicks are about to debut to the world and the National Aviary is taking us all along for the ride.
From foul-mouthed parrots to prison-breaking cats, these 25 animals are proof that “crime” can sometimes be cuddly.
There's a lot to love about these eccentric birds.
Don’t be fooled by their reputation for being thoughtless. Turkeys have a few tricks up their wings. Before tucking into your Thanksgiving dinner, read up on the bird you're about to gobble, gobble.
So far, the wild birds have caused $61,500 worth of damage, according to officials.
The presumed remains of the ancient penguins are a “jumbled mixture” of bones from three modern species.
These interspecies friendships prove that anybody can get along if they really put their minds to it.
One hundred European starlings released in Central Park in 1890 have turned into 200 million across the U.S. today. Now scientists are looking into their genetic diversity.
We’re talking hummingbirds, not eagles, but still.