Better link: https://www.scientificamerican.com/article/this-bat-recorded-itself-catching-and-eating-a-songbird-in-midair/ https://www.scientificamerican.com/a

Better link: https://www.scientificamerican.com/article/this-bat-recorded-itself-catching-and-eating-a-songbird-in-midair/ https://www.scientificamerican.com/article/this-bat-recorded... I was surprised to learn how high the bats and migrating birds are flying - more than 1,000 meters during the "searching" phase. They would likely be invisible from the ground without really good binoculars.