10 27 03 Spiders Always Remember Their First
A female wolf spider’s adolescent experiences with male courtship can determine whether her adult romantic encounters result in mating or in cannibalistic meals.
08 21 03 Bird song prompts species split
African indigobirds (Vidua spp.) lay their eggs in the nests of other species, and both males and females learn the songs of their hosts. Recognition of host songs appears to have driven speciation among indigobirds.
08 07 03 Bird song on the brain
In starlings, familiar tunes can trigger specific nerve cells into action.
08 07 03 Confused hornets may attack humans
A common ingredient of cosmetics and fragrance can throw hornets into a defensive rage.
07 17 03 Urban birds raise their voices over the din
Great tits hit the high notes to ensure that their mating calls are heard above the city’s din.
06 26 03 Monkeys match expression and sound
Rhesus monkeys seem to communicate using both sounds and facial expressions.
06 13 03 Human speech and birdsong
Human babies may learn to talk by receiving feedback from caregivers, similar to the way many bird species use social feedback to learn songs.
06 10 03 Chimps may belong in human genus
New research suggests that chimpanzees should be included in the genus Homo, along with humans.
05 29 03 Rethinking the evolution of speech
The position of the voice box, or larynx, has been considered a uniquely human characteristic. No longer, according to research in PNAS.
05 22 03 Birds filter frequencies from songs
Recording a dove’s song from near its voice box, or syrinx, shows that doves sing pure tones by filtering out overtones.
05 22 03 Bee foraging skills marred by chilly hives
Variations in hive temperature during development can have a lasting effect on bees’ communication and learning abilities.
05 01 03 Butterfly beauty polarized
Some male butterflies appear to recognize females of their own species using the pattern of polarized light reflected from the females’ wings.
04 17 03 Wily fathers assess paternity
Male bluegill sunfish are more likely to devote time to their offspring when they are certain that they really are the father.
04 15 03 Queen bee attracts workers with chemical cocktail
A honey bee queen attracts the retinue of workers that groom and feed her by releasing a complex concoction of at least nine different chemical compounds.