text:  though they actually do catch the majority of their food themselves by skimming the ocean surface for fish and squid. Eva have the largest wings for their body weight of any bird in the world, and recent studies using satellite transmitters have shown that they can fly over two months without landing. While they're incredible flyers, they lack the ability to take off from water, and they're also very clumsy on land. Eva are one of those birds that are much more often seen than heard.