Honeybees can generalize about numbers, at least up to three, a new study reports.

Thermal imaging and algorithms challenge famous estimate of extreme bat number. (p. 12)

In past 50 years, apparently healthy forests have started losing trees faster, possibly because of climate change. (p. 8)

Male and young whalefish look so different from females that scientists had mistakenly put them all in different families.

Dumb Designs for Sex: Evolutionary biology walks on the weird side.

Newly recorded moth could be the first demonstrated case of natural sonar-jamming. (p. 10)

Bats swim, run, flirt and do lots of other nonflight jobs with their wings -- a fact that may have influenced evolution of the wing's architecture.

Tall is good for dodging danger, but short is better for climbing waterfalls.

Goldenrods temporarily duck their heads during pest season

Honeybee air traffic can interrupt caterpillars' relentless munching. (p. 14)

The cell-by-cell detail of a 45 million-year–old retina is preserved in amber

DNA from old museum specimens reveals evolutionary look-alikes.

Equal sausage demanded for equal paw shakes. (p. 13)

Virus could explain one symptom of colony collapse. (p. 5)