White foam with laying - is that healthy

[hdoress]

Hi friends, our Chicken CeCe had hidden a cache of eggs under a tarp in our yard - we collected the eggs and she began laying again in the same spot - our son saw white foam coming out "from her butt". Is this a normal aspect of laying (we've had chickens for a while and haven't noticed this) or is it a symptom of something? Thanks for any advice you can provide.

 

[sourland]

I'm guessing it was just a little 'assembly line' lubricant.