egg viability

We are candling eggs - day 14 and came across these two eggs. The first one is a video, so I could try to show the shadowy movement. Is this normal? It doesn't look like the other eggs. Please forgive the music. It was to drown out background music: Has this egg died? I don't see any growth...

I noticed an egg outside of Mama Muscovy Duck's nest yesterday so assumed maybe it wasn't viable. I left it where it was with the idea of disposing of it next time she was off nest. I ran an errand today and when I can home the egg was gone.I live in FL and the weather has been warm and dry. Is...

I have some broody birds on my farm, and sometimes I'm away for two or three days. I collect eggs as soon as I can, but my broody gals sit on the eggs from the moment they are laid. Does anyone know if they can be sat on for a day or two before being put in a chilled 55 degree basement for...