• Bird Academy
      Bird Academy

      1. Do the crows in your area appear healthy?  Have you seen any evidence of foot disease? Did West Nile Virus have a significant impact on the population, to your knowledge?

      2. Have you ever noticed any aggression between American Crows, or are they generally cooperating, maybe taking care of each other?

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    • Valerie
      Participant
      Chirps: 29
      1.  I haven’t seen any obviously sick birds or seen any damaged or missing feet, but it would be hard to tell if they’re standing in grass. I don’t know anything about West Nile in Georgia crows, but now I know to watch for these things.

       

      2.  As far as I recall, I’ve only ever seen very minor scuffles—nothing that looked any more serious than the minor charging at each other you see at any backyard bird feeder.
    • Lynn
      Participant
      Chirps: 1
      There was a crow visiting my yard in 2024 with a limp. I don't recall what he foot looked like, but he definitely had one. I have not seen a bird with a limp in the past year, so he has recovered or is gone.

      I did not notice any change in the numbers of crows or Blue Jays due to West Nile Virus in my area ( New Brunswick, Canada ).

      I have not observed aggressive behaviour among crows.
    • Michael
      Participant
      Chirps: 2
      Yes, in Maryland, close to D.C., there was an impact of West Nile virus. One would often seen their corpses laying on the ground.

      Generally cooperating esp. if they are attacking a nearby hawk.
    • Teresa
      Participant
      Chirps: 24
      1. They seem to be healthy.

      2. They seem to be cooperative.  I have never seen them fight while eating.
    • Dumetella
      Participant
      Chirps: 19
      1. This is the first I've learned of foot disease. Since I wasn't aware of it, I haven't paid attention to the quality of crows that I see flying around and occasionally perching. I will be more attentive in future. I also don't know the impact of West Nile Virus on crows in my area. I do know that WNV hit the local Blue Jay population hard; they seem to have recovered, though whether or not they have reached pre-WNV numbers is unknown to me.

      As the etiology of this horrid foot disease is unknown, could there be a genetic component to the crows' susceptibility to it? Is there a greater incidence of it among known "Hapsburg" crows than among the common masses, the latter of which likely have more robust genotypes?

      2. Once again, I haven't studied the local crows in much detail. Seems as though they're always conversing cordially enough among themselves, not arguing or fighting.
    • A
      Participant
      Chirps: 22
      1. The local crows appear healthy, no evidence of foot disease. As far as I know West Nile virus thankfully didn’t strongly impact the population.

      2. They all seem to get along well. Occasionally I’ll see a pair check out the bird feeder.
    • 1.  I have not seen any evidence of foot disease.  West Nile did have an impact on the crows and blue jays back in the early 2000’s, but doesn’t seem like  such an issue now.

      2.  Generally, whenever I see crows they are cooperating.

      I am curious why only one foot?  Does the disease ever spread further or affect the other foot?
    • Terri
      Participant
      Chirps: 2
      1.  Have you seen any instance of both feet deteriorating? Of course, the crow would not survive for long, but I was just wondering if you have recovered any crow bodies missing both feet.
    • Charles
      Participant
      Chirps: 1
      1. I have not seen any evidence of unhealthy crows where I live.  Occasionally, I see a dead swan, most likely avian flu, but no dead crows.

      2. All the crows in my area (rural) seem to get along.  Sometimes they appear to be having a game of chase, but I have not witnessed any violence among them.  In fact, I usually see cooperation.  One evening I witnessed a Red Tail Hawk swoop in low to attack a turkey and her chicks.  The turkey leapt into the air and flared its talons at the hawk. Then from the opposite direction of the hawk attack three crows came screeching in and chased the hawk off.  It was amazing to witness.

    • Jill
      Participant
      Chirps: 4
      There is a crow in a nearby family that appears to have avian pox affected feet. I have been watching him for about 3 years. He goes through periods where he appears to favor one foot or another but recovers. The sores, or lumps don't seem to be increasing. I hope this means that is is a chronic, not fatal problem for him. He seems to be the dominant male in the family.

      All other family members appear healthy.
    • Amelie
      Participant
      Chirps: 6
      1. The crows where I live seem to be quite noticeably healthy. I haven't seen any evidence of foot disease.  I'm not sure whether Western Nile Virus had an impact or not. If it did, the population is fine now.

      2. I have observed some subtle aggression, like chasing. I've never seen anything more violent than that.
    • Renee
      Participant
      Chirps: 14
      Of the crows I have seen in my area they appear to be healthy. No, I have not seen any with foot disease. To my knowledge do not know that west nile had any significant impact.

      I have not seen any aggression between crows.  When seen together they all seen to be getting along and cooperating together.
    • Heckmann
      Participant
      Chirps: 13
      The crows in my area appear healthy and I have not seen any evidence of foot disease. I do not know if WNV had a significant impact on the local population.

      The crows I observe are generally cooperative. There are clearly more and less dominant birds, but I've never seen anything more aggressive than a more dominant crow using body language to move a less dominant crow from a piece of food.
    • STEPHANIE
      Participant
      Chirps: 1
      This unit reminded me of an incident in our back yard just outside of State College, PA on Sunday, May 1, 2005. Crow murder of Grackle. I posted this to the State College Bird Club listserv:

      "This afternoon I heard a scuffle in the tree tops at the edge of the lawn and saw a crow in flight grab a grackle by the neck .The crow flew down to the lawn with the grackle firmly in its beak, and then pecked intensely at the neck until the grackle was dead and then some. It truly looked like crow revenge. Two jays were watching and started up with alarm calls that continued even after the crow had flown off.  I later picked up the grackle before the dog could get to it--the head was all but severed from the body, but the head and body were untouched.

      No crows in the yard the rest of the afternoon. I don't know whether there is a nest., but am waiting to see what happens in the next episode."

      Did not see any followup, but I was working full-time so any number of things could have happened the next or following days when we weren't at home.

    • Christine
      Participant
      Chirps: 6
      1. Generally, the crows in my area seem healthy with intact feet. However, there are a couple of crows that I've noticed that are not entirely healthy. There is one crow that visits me for treats for over a year now. I see her daily at sunrise when it is not nesting season and later in the day on occasion in the spring. I believe that she is female and has a bent leg with a little bit of a limp. Another crow that visits me regularly has one wing that droops. It can still fly and regularly flies up to the balcony.

      2. I've noticed that if a crow gets too close to another or tries to steal food while they are feeding, they make an annoyed "squawk" and physically move the other crow away.
    • Steph
      Participant
      Chirps: 5
      1. The crows in my area generally seem healthy. I’ve seen an occasional one with a limp, but I don’t know if it’s foot disease. I don’t know if West Nile Virus has affected crows in my area - I haven’t lived here long enough to know.

      2. I haven’t witnessed any serious aggression with the crows in my area. Anything that could be taken as a little aggressive has appeared to mostly to be an assertion of boundaries or dominance. Sometimes it looks like they are playfully picking on each other. I haven’t witnessed any actually try to hurt another crow.
    • Kat
      Participant
      Chirps: 18
      1. Crows in my area appear to be healthy. I have seen not only crows but other birds with foot issues, due to disease, genetics (I am guessing), or human negligence/trash/cruelty (e.g., fishing line, zip tie, etc.). 2. I do not see as much aggression between crows as I see against their predators like Red-tailed Hawks.
    • Anton
      Participant
      Chirps: 1
      August 2025 -

      The crows Wynnewood PA appear very healthy. I see a famility of 3 to 4 regularly. No evidence of foot disease. No agreesion notoced.

      Was in Paris in week 3 of August and saw a solitaey crow in Saint German du Pres, a very very urban area. It was perched on a lamp pist. Three days lewater came upon three crows in Amsterdam moving and playing as a family, chasing eachother.  All seemed in very good confition
    • Mark
      Participant
      Chirps: 3
      The crows in my area here in CT appear very healthy and active.  I have not witnessed any such attack or aggression like in the video.   Also I particularly enjoy listening to and watching the Ravens.
    • Claire
      Participant
      Chirps: 3
      There is a collage that has some pretty intresting birds at their campus. Such as ducks, many differnt types of song birds, and black swans. But one particular bird, or birds always catches my attention, which are the crows. They seem restless in the tree as they fly back and forth from tree to tree. Squawking at each other as they go. Sometimes it looks like they are being playful, but also, incorparting what territory is thiers. Its hard to get a good look at them becuase of how energetic they are. But I would assume that there are more males then females in the bunches that gather. But what I have gathered is that they seem healthy, and natarully claiming dominance.
    • Laura
      Participant
      Chirps: 2
      The crows in my neighborhood seem to get along well and look healthy. We did have two, a couple of years ago, with foot damage. Lame foot showed up for well over a year. His foot was drooping and he seemed to manage pretty well with it. I didn't see him for a while and then one foot showed up. At first I thought it was lame foot and he had finally lost his foot, but then lame foot also appeared a week later. Then they both vanished. That was last year. I haven't heard anything in the local news about West Nile in my neighborhood. There have been some reports of it in the flatter area of Richmond, But these crows live in the hills.
    • Crows in my area do appear to be healthy.  I have not notice foot disease and there are no reports of the West Nile Virus in my area.   However, there quite a few cases of Avian flu lately.  I assume this could affect the crows although I am seeing mostly waterfowl dead.   I don't notice any aggression with our crows, but I am going to start paying a little more attention.  They normally are flybys or I hear the calls.   Very rarely will one sit long enough to be observed.
    • Steph
      Participant
      Chirps: 11
      1. The crows in my area seem to be healthy. I haven't seen evidence of foot disease. There were reports of some birds testing positive for West Nile Virus in my area.

      2. I have not noticed any aggression between American Crows. My observations have them cooperating and I have seen allopreening occurring and adult birds feeding young that have left the nest.
    • Anya
      Participant
      Chirps: 10
      I don't get the chance to see the crows here close enough or for long enough to know.  But this had me wondering, is there any chance this came from the leg bands?  Some imperfection or contamination?  Incorrect placement?  Just wondering if that was looked into.