Scientists have been crowdsourcing periodical cicadas for nearly 200 years, with notices in newspapers and postcards, then answering machines and emails. Now the public can help track Brood X with an app called Cicada Safari.
Peregrine falcons were nearly wiped out by DDT. Nature blogger Kate St. John explains why this bird, one of the fastest in the world, is likely to be nesting in a city near you.
Amphibians will use a vernal pool to mate and lay eggs. Their young will mature in the temporary pond and then head back into the woods. They will return next year to continue the cycle.
Look up when you're in Philadelphia and you might just see a bald eagle. But what makes Philly a good home for this once-endangered bird? The Delaware.
Fewer eggs hatched in songbird nests exposed to noise of compressor stations than in nests near quieter locations. Birds were spending less time on the eggs.
