a roadrunner sitting on a roof next to a hummingbird feeder and picking off the hummers; a great skua in the Antarctic snuggling in among newborn seal pups and sipping milk from their lactating mother; herons wolfing down a rabbit or a muskrat; a pelican in London swallowing a pigeon; a gull ingesting a blue jay; or a normally insectivorous yellowhead in New Zealand seen for the first time eating bush lily fruits.