Pretty often people start threads asking for help with gasping birds. I've had the same question in the past myself. It's a tough question to answer because of the number of possible causes. This thread is intended as a place to list and discuss conditions and ailments that cause gasping.
From a disease/parasite standpoint I believe this pretty much covers it but if I've missed anything post it up here.
http://www.thepoultrysite.com/disea...ction-mg-chronic-respiratory-disease-chickens
http://www.thepoultrysite.com/diseaseinfo/7/aspergillosis
http://www.thepoultrysite.com/diseaseinfo/65/gape
http://www.thepoultrysite.com/diseaseinfo/82/infectious-coryza<---doesn't commonly cause gasping but comes with other respiratory ails.
http://www.thepoultrysite.com/diseaseinfo/78/infectious-bronchitis-ib
http://www.thepoultrysite.com/diseaseinfo/62/avian-influenzahighly-pathogenic-hpai-fowl-plague
http://www.thepoultrysite.com/disea...um-pullorum-disease-bacillary-white-diarrhoea
http://www.thepoultrysite.com/diseaseinfo/39/colibacillosis-colisepticemia
http://www.thepoultrysite.com/diseaseinfo/121/respiratory-disease-complex
Keep in mind that gape worm is uncommon even though as your surf around the web most people will point you right at gape when you say you have a gasping bird. I've never seen a confirmed case of it presented on this forum or anywhere that I can think of.
Non disease related causes
-Sometimes they really are just yawning
-Airplanes flying over low can cause them to "yawn" a few times in a row.
-Egg binding
-Boinking their heads on the ceiling
-Impacted crop
From a disease/parasite standpoint I believe this pretty much covers it but if I've missed anything post it up here.
http://www.thepoultrysite.com/disea...ction-mg-chronic-respiratory-disease-chickens
http://www.thepoultrysite.com/diseaseinfo/7/aspergillosis
http://www.thepoultrysite.com/diseaseinfo/65/gape
http://www.thepoultrysite.com/diseaseinfo/82/infectious-coryza<---doesn't commonly cause gasping but comes with other respiratory ails.
http://www.thepoultrysite.com/diseaseinfo/78/infectious-bronchitis-ib
http://www.thepoultrysite.com/diseaseinfo/62/avian-influenzahighly-pathogenic-hpai-fowl-plague
http://www.thepoultrysite.com/disea...um-pullorum-disease-bacillary-white-diarrhoea
http://www.thepoultrysite.com/diseaseinfo/39/colibacillosis-colisepticemia
http://www.thepoultrysite.com/diseaseinfo/121/respiratory-disease-complex
Keep in mind that gape worm is uncommon even though as your surf around the web most people will point you right at gape when you say you have a gasping bird. I've never seen a confirmed case of it presented on this forum or anywhere that I can think of.
Non disease related causes
-Sometimes they really are just yawning
-Airplanes flying over low can cause them to "yawn" a few times in a row.
-Egg binding
-Boinking their heads on the ceiling
-Impacted crop