Usually, biologist try to fit their observations into a selection-framework, but here it does not fit.

But for now, biologists are simply trying to identify useful properties in the hundreds of species and many times more substrains that already exist.

Exactly why evolution has produced all this fussing, squawking and tapping is a question many biologists are now trying to answer.

Because of the risk to native species, biologists have tried to kill the eels but have mostly failed.

Something has happened recently to increase the abundance greatly, and biologists are trying to figure out what.

For example, biologists try to infer which genes have been under strong selection by detecting selective sweeps.

So marine biologists tried playing feeding calls.

The biologists are trying to find a large boat with a crane to lift the whales over the side.

Dini pairing was another mystery that hadn't been adequately explained, though biologists were trying.

Should the experiment work, biologists would seek out more young birds next year and try again.