When their tools get dull, leaf-cutters switch jobs (w/ Video)
When their razor-sharp mandibles wear out, leaf-cutter ants change jobs, remaining productive while letting their more efficient sisters take over cutting, say researchers from two Oregon universities.
Lustful beetles desire water, not sex
(PhysOrg.com) -- Female seed beetles are known for their promiscuity, a surprising fact given that the males of the species have dangerously sharp spikes on their sex organs. Now a U of T Mississauga team ...
Reversal of the black widow myth
The Black Widow spider gets its name from the popular belief that female spiders eat their male suitors after mating. However, a new study has shown that the tendency to consume a potential mate is also true of some types ...
A love game: Fish courtship more complex than thought
Monash University researchers have discovered that male Australian desert goby fish are surprisingly strategic when it comes to courtship, adapting their tactics depending on the frequency of their contact ...
Color of robins' eggs determines parental care
A male robin will be more diligent in caring for its young if the eggs its mate lays are a brighter shade of blue.
Real angry birds 'flip the bird' before a fight
Male sparrows are capable of fighting to the death. But a new study shows that they often wave their wings wildly first in an attempt to avoid a dangerous brawl.
Birds find ways to avoid raising cuckoos' young
Some species of birds reproduce not by rearing their own young, but by handing that task on to adults of other species. Known as brood parasitism, this habit has been most thoroughly researched in the cuckoo. ...
Study says beavers use scent to detect when trespassers could be a threat
For territorial animals, such as beavers, "owning" a territory ensures access to food, mates and nest sites. Defending that territory can involve fights which cause injury or death. How does an animal decide ...
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