Is this normal? Egg white in nesting box

[soccerbabiesmama]

I found this in the nesting box today. I have 2 Marans that are 5 months old and should be coming into lay, and one australorp who has been laying well for almost a year. It looks like egg white, no sign of a shell or soft shell. Also, there is no yolk. Any ideas?

 

[matimeo]

Its possible one of the chooks ate an egg and just left that part.