World’s insectivorous birds eat 400 to 500 million metric tons of beetles, flies, ants, moths, aphids, grasshoppers, crickets and other arthropods per year, according to a review of 103 previous studies. An European bee-eater (Merops apiaster) with an insect. Image credit: Antonios Tsaknakis / CC BY-SA 4.0. Birds, represented by nearly 10,700 species, are found across the world in all major land ecosystems. They exhibit a large variety of life styles...
