Weird (possibly neurological?) chicken illness

SarahSmalls

Chirping
Nov 7, 2017
13
8
50
I’ve had a strange illness that about 4 or 5 of my chickens have suffered from over the last two years.

they have been varying ages, and no particular breeds. (they have been a mix of Orpingtons, austrolorpes, barreds and RIRs).

Symptoms
  • lethargy
  • uncoordinated leg movements
  • eye rolling
  • trouble balancing ( may fall to one side)
  • no loss of interest in food or water
  • sometimes if you tip them upside down, weird stuff falls out of their crop
  • fit
I live in the woods in NC, the chickens free range over ~6 acres. I think the woods may be a factor, as when I lived in the open, I did not see this problem, of course this is only anecdotal. these symptoms occur over the course of a day and the bird either recovers or dies within 2-3 days.
4/5 of the birds that have had this have died (some have had fits).

for the life of me I cannot figure it out. I only lose one bird at a time, so I’m thinking it’s probably not infectious. I check for wounds and none are found. Could it be something they are eating? That’s the only thing I can think, we have lots of lizards and caterpillars and mushrooms, I don’t feed then much ”human” food. They are on a purine layer mix that they have been their whole lives, they have fresh water and a big fenced in area to sleep in at night with a coop I clean out once a week. They did have a bout of scaly leg mites, but I used diatomaceous earth and some poultry dust to rid the area of these.

any books or threads on the topic are usually centered around what humans may have fed their chickens that are poisonous. Not what they may have found themselves. what does anyone think? Has anyone seen anything similar?
 
I would really recommend that if you lose another to similar symptoms that you have it necropsied. Sometimes that is the only way to know for sure. It is possible that they are randomly finding something while ranging that is toxic and being poisoned. It's also possible, given the long time frame, that they are all separate issues, and completely unrelated. Sometimes symptoms can be very similar with different causes.
https://www.aphis.usda.gov/animal_health/nahln/downloads/all_nahln_lab_list.pdf
https://www.metzerfarms.com/PoultryLabs.cfm
 

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