So I have two ducks, Walter and Kevin. They’re both girls but I named them already so I decided to stick with it. Anyways, I discovered early on that their favorite food is peas. Whenever they see me with peas, they will do anything to get and and when I hand feed, they bite so hard that it hurts. However, today when I fed them, Kevin still jumped and bit really hard but Walter was so gentle and barely bit anything—almost as if it hurt to put pressure on his beak. This just started today. He is acting normal and alert otherwise but I am a bit concerned. By the way, they are 6 weeks old. Tonight, Walter also had a hard time catching the food where in the past he had no problem. Help!!