3.5 month old chickens

[calebc311]

I recently witnessed my chicken throw up... She pants a lot and occasionally puffs up her feathers. Her poop seems fine and everything else about her physical state has no problem. Could this be worms or any other problem? If there is a problem, how would I cure it?
Thanks

 

[ChickensRDinos]

How hot is it where they are? What does her crop feel like?

 

[iwiw60]

How hot is it where they are? What does her crop feel like?

X2 ... I understand that California is in the middle of a huge heat wave right now. Could definitely be that they are overheating.

 

[Michael Apple]

Chickens will drink more in hot weather, and will regurgitate when eating at a low level. Keeping waterers in the shade at the proper height (top of trough at the same level as the lowest height of their back) and doing the same with feed troughs will help prevent regurgitation. It is important to keep waterers and feeders clean to avoid bacteria/algae.

If birds are crop bound, that is whole different story. Keeping grass cut around range areas prevents birds from ingesting the more course and undigestable matter. Make sure birds have access to mineral grit. Birds that are 3 months old should still be receiving a coccidiosis preventative around every three weeks if you have them off medicated feed. Good ventilation in the coop, and keeping coop litter dry is important also. Provide more than one water station and feed station depending on how many birds you have.