It wasn't very nice of Valdes to laugh, really. Not that Adam could tell him so, since he was very much bird-brained and couldn't do anything other than repeat it when Valdes said "What's up?"
William, culprit of making Adam a bird, had dumped Adam off and bailed entirely. It was sad, really, so there was no one to explain what exactly needed to be done. Other than, you know, making Adam not a parrot.