it sounds to me that the DE dust has irritated them, as Lynne posted earlier.
especially since you say they were locked in the coop for the day..
I think I would clear some of it out..
while they are not in the coop...
try not spread into the air.
do you have a shop-vac?
you might have to change out the bedding if it's full of dust..
I try to be very careful when using dusts..
they tend to be pretty sensitive to dusts.
if you can..it might not hurt to wipe the beaks with dampish cloth.
keep an eye out for any other symptoms or if they start to wheeze.
sorry you lost your hen..
did you post about it?
especially since you say they were locked in the coop for the day..
I think I would clear some of it out..
while they are not in the coop...
try not spread into the air.
do you have a shop-vac?
you might have to change out the bedding if it's full of dust..
I try to be very careful when using dusts..
they tend to be pretty sensitive to dusts.
if you can..it might not hurt to wipe the beaks with dampish cloth.
keep an eye out for any other symptoms or if they start to wheeze.
sorry you lost your hen..
did you post about it?
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