Birds can delay their flights due to global climate change. Cornell University reports.
In particular, they can accelerate the onset of spring migration, but also delay it to arrive on time.
“We found that the studied species was able to migrate 43% faster to reach breeding grounds after the American redtail delayed departure from their Jamaica wintering grounds for up to 10 days. Author Bryant Dossman said, “However, the increase in migration rate resulted in a more than 6% decrease in overall survival rates. led to it,” he said. new research.
Tactics to speed up migration may include flying faster and taking fewer stops along the way. Also, the acceleration still doesn’t quite make up for the 10-day delay.
These data were obtained from redtail observations and bird-mounted radio beacons at Fort Hill Nature Reserve in Jamaica.
Understanding how animals respond to a changing climate is important for planning wildlife conservation in the face of global warming.
ancient biologists approvedthat the moths’ “tails” act as decoys for bats.