CASTLE DANGER -- A quick flitter in the treetops, then a chirp or short song is all it takes to get Anna Peterson to make a mark on her clipboard. She pauses on her walk through the woods, checks her ...

Every spring, migratory birds arrive in the continental United States from south and central America to breed. But precisely when they arrive each spring varies from year to year. In a NASA-led study ...

When the song pauses in a game of musical chairs, everyone jostles for one of the remaining seats. Bird migration today is much the same. When it’s time for a break in their biannual travels, ...

Platforms such as iNaturalist and eBird encourage people to observe and document nature, but how accurate is the ecological data that they collect? In a new study published in Citizen Science: Theory ...

In 1862, Charles Darwin predicted the existence of a moth with a long tongue based on a comet orchid's nectar spurs. This was confirmed in 1903 with the discovery of a long-tongued hawkmoth, ...

Every year, approximately 7 million birds migrate through the city of Chicago as they travel the Mississippi Flyaway, one of the primary migration routes for North American birds. However, for these ...

Billions of birds that once filled North American skies have disappeared, and new science shows they are disappearing faster ...

Bird strikes with aircraft pose a serious threat to human safety. The problem dates back to the early days of aviation, with the first death of a pilot recorded in 1912 when an aircraft crashed into ...

Western tanagers are migratory birds that are present in Northern California in the spring and again in late summer. A new study shows that observations by 'citizen scientists' using apps such as ...