Chick gulping for air

[KniseleyFamily]

We have chick gulping for air. We had another chick do the same thing and died less than 48 hours later. She is 6 days old. What can I do? What causes this?

 

[KniseleyFamily]

She passed away between 2 and 6 am this morning. If anybody knows what is causing this, please help! I have another two chicks starting to pant heavy. They stop eating and drinking and just act like they are having trouble getting enough air. Anybody know what is causing this?

 

[War Chicken]

Gapeworm or any number of respiratory infections? I couldn't view the video and you haven't mentioned any symptoms or lack of symptoms that would allow us to narrow down the possibilities.

 

[KniseleyFamily]

They don't shake their necks; does that mean they don't have gapeworm? What are some other symptoms I should be looking for? Any good, reliable resources I can read more about chicken respiratory illnesses?