The proportion of female monarch butterflies in a North American population has been steadily declining for the last 30 years.

Mice appear to function normally on the short term when levitated by strong magnetic fields after an initial bout of panic.

The droppings of infected deer contain prions that may be able to spread chronic wasting disease.

Some skylarks can not only differentiate among songs of neighboring birds, but also match these songs with their territories and punish birds who stray from their own “property.”