This has not been the best couple of months in my life, though I've had worse. Today I lost my entire Easter hatch. I took three birds, from pens widely seperated, and the Easter chicks never near any other bird. to the state lab for necropsies..
It'll be a few days before I hear from the lab, but it was buffalo gnats. Since we traded some chickens, I called my neighbor to warn him I was having problems. He called back to report the buffalo gnats were driving his brooder chicks crazy and two or three were dead; and that people in this area have lost entire flocks to them before. He said they crawl in their beaks though the nostrils and get in their airways. He was putting up a fan to blow the gnats clear of the brooder. Another aquaintence called his cousin, who reported previous problems and claimed chlorine bleach spayed in the coop repels them. I saw them on my dead and dieing, but thought they had gathered on them after they went down.
Of 52 birds, I lost 45, including every pure bred. I'm left with 2 EE hens, 4 ISA Brown hens, and a white Ameraucana/CX pullet; one ISA is not healthy. I've dusted the survivor's bodies with Sevin, and hung glass containers of chlorine with holes punched in the lids in the coop and breeding pen/tractor.
I do have 14 chicks inside that hatched last week, and 42 eggs in the bator.