Sneezing chickens what is this?

[windandraine]

I have noticed my 8 week old chickens I bought from a hatchery have started sneezing. Not all all at once but I notice most if them are doing it. What could this be ? How do I fix it?

 

[Judy]

Is it dusty where they live? It could be simple irritation. It would be unusual for them to have picked up a respiratory disease at the hatchery, but it is possible that one was brought in by a visitor or even on the wind.

http://edis.ifas.ufl.edu/ps044 (see the chart at the bottom)

https://www.backyardchickens.com/t/...ow-a-buggery-nose-on-my-roo/0_20#post_9778598