David Sibley

This is a bird sound that I recorded in August in Massachusetts. Listen to the recording and see if you can guess what it is. Some hints are below, and when you’re ready just follow the link for the answer. [iframe width=”100%” height=”166″ scrolling=”no” frameborder=”no” src=”http://w.soundcloud.com/player/?url=http%3A%2F%2Fapi.soundcloud.com%2Ftracks%2F55983416&auto_play=false&show_artwork=false&color=f3f3f3″] click to Read the Answer Hints It is a […]

Not really. A recently-published study used high-speed video of hummingbirds hovering in simulated rain to investigate questions of how hard it is to stay airborne while simultaneously getting wet (and heavier) and getting pelted with water drops that must be a significant blow to their 4 gram bodies. [iframe width=”420″ height=”315″ src=”http://www.youtube.com/embed/NPexeLazNw8″ frameborder=”0″ allowfullscreen>] The

An interesting study published recently found that cowbirds in bright sunlight were slower to detect predators, and cowbirds in shade were quicker. The study concludes that the delay happens because the cowbirds are slightly disabled by the glare of the bright sun. Could this explain why small birds are hard to find in bright sunny