I have 3 chickens that are sneezing, gurlging, & breathing weird. I'm fairly new to chickens & have NO clue how to handle this, so I'm needing help, please. One has a bit of a runny nose, too. When they breath, they stretch out their necks & open their beaks to take breaths. Please help! I would like to get meds or whatever I need today, if possible. Thank you so much!!!!