Is it normal for the hen to be making a loud noise while sitting on her nest/eggs? It's a loud kinda panting sound, shes been doing it for a while now & her eggs are suppose to hatch anytime now. I thought she was hot but even when it wasn't really hot out she was doing it, i guess she still could have been hot. My other mommy duck didn't make any noises so I wasn't sure if something was wrong. Thanks, ~Julie~