Friday before the ultralight migration, all chicks get a "dewormer"
to control infections. One week they get a liquid medication and
the next week they get one that comes as a powder.
biologists know that Whoopers like a small fish called smelt. They
guessed that they could inject the liquid medicine into the fish
and the birds would gobble it up. (And they did!)
the powder, which tasted terrible, posed a new problem! The crew
tried taking the guts out of the smelt and carefully pouring the
powder in. But it was a messy job and the whoopers didn't go for
the nasty flavor.
one scientist had a new idea. He gave the crew soft capsules to
put the nasty powder in. When they stuffed the capsules into the
smelt, the birds gobbled them up.