The big-hearted rescuers then used a tube to administer air from a ventilator until the wild creatures coughed back into life.
Passer-by Sim Wright, 49, snapped the bonkers scene as he passed the depot in Colchester, Essex.
The marine biologist said: “We heard what sounded like explosions coming from the depot so we thought it was best to get out.
“When I went round the back, I could see they were looking for people in the building and when they were sure no-one was trapped, they turned their attention to the birds.
“They were carrying the birds out by hand. They had passed out from smoke inhalation.
“They got them on to the ground and they started feeding them water out of a cap to revive them.
“Then I was really surprised because they used a tube to feed them oxygen which really seem to do the trick.
“When I saw it, being a marine biologist, I was really taken with the care they were displaying to the animals.
“Obviously, their first priority is for humans but once they had ascertained there was no-one in there, it was really great to see how quickly they turned their attention to the birds. Soon after I took this they were walking around the place and looked okay.”
Essex County Fire and Rescue Service said the firefighters were called to the blaze on Friday, May 18.
A spokesman added: “This is a great example of the compassion our firefighters show on a daily basis across our county.”
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