Found in temporary desert pools and mangrove swamps, some species of killifish can go without water for weeks at a time. And their eggs are no different: no water, no problem! Now, scientists have found that the eggs of two killifish species are so hardy, they can withstand being digested by birds, too. The finding may be the first firm evidence supporting an idea that has long held sway in scientific circles—that birds disperse fish.
Little auks slurp like fish
The little auk is a small seabird that would fit comfortably in the palm of your hand. At only about 150 grams, this featherweight bird eats 20% of its body weight in prey each day. And this takes some underwater hunting skills. Diving up to depths of 27 meters, the bird spots and slurps its prey, much as fishes do. Read more about the world’s only slurping seabird here in my first piece for Hakai magazine.
Photo credit: Manfred Enstipp