Animals
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Animals
Male spiders amputate organs, run faster
Tiny male spiders of a species common to the southeastern United States routinely remove one of their two oversize external sex organs, enabling them to run faster and longer.
By Susan Milius -
Animals
Hooking the Gullible
Research into fish behavior often reveals ways that bait designers can trick a fish into biting odd-looking lures, but angler appeal can also be an important marketing consideration.
By Sid Perkins -
Animals
Dull birds and bright ones beat so-so guys
The plumage of yearling male lazuli buntings shows signs of a rare form of evolutionary pressure called disruptive selection.
By Susan Milius -
Animals
Flex That Bill: Hummingbirds’ surprising insect-catching style
High-speed videos of hummingbirds catching insects reveal that their lower bills are unexpectedly flexible.
By Susan Milius -
Animals
Long Horns Win: Selection in action—Attacks favor spike length for lizards
A hunting bird's quirk—a tendency to impale prey on thorns—leaves a record that has allowed scientists to catch a glimpse of an evolutionary force in action.
By Susan Milius -
Animals
Wolf vs. Raven? Thieving birds may drive canines to form big packs
A previously underappreciated reason why wolf packs get so big could be the relentless food snitching of ravens.
By Susan Milius -
Animals
The Social Lives of Snakes
A lot of pit vipers aren't the asocial loners that even snake fans had long assumed.
By Susan Milius -
Animals
Road rage keeps ants moving smoothly
Streams of ants manage to avoid traffic gridlock by a bit of strategic pushing and shoving.
By Susan Milius -
Animals
Hornbills know which monkey calls to heed
Hornbills can tell the difference between two kinds of alarm calls given by monkeys.
By Susan Milius -
Animals
Second bird genus shares dart-frog toxins
Researchers have found a second bird genus, also in New Guinea, that carries the same toxins as poison-dart frogs in Central and South America.
By Susan Milius -
Animals
New Green Eyes: First butterfly that’s genetically modified
Scientists have genetically engineered a butterfly for the first time, putting a jellyfish protein into a tropical African species so that its eyes fluoresce green.
By Susan Milius -
Animals
Jungle Genes: First bird genome is decoded
Researchers have unveiled a draft of the first bird genome to be sequenced, a vintage chicken.
By Susan Milius