Gelatinous white?

[MagistraTn]

Any ideas why some whites are very gelatinous? I was thinking it was because some girls are getting on in age, but this one is from my youngest (14 months) marans. Some of the white is extremely watery and the rest very thick and jelly-like. They are seem healthy otherwise.

 

[Wyorp Rock]

Fresh egg!

https://www.thepoultrysite.com/publications/egg-quality-handbook/5/internal-and-external-egg-quality