Why Do Crows Attack Other Crows

8 Comments

  1. Avatar photo David Irelan says:

    Because they get together and a murder always happens.

  2. Crows don’t always attack the injured in their family group. I have a group of crows I have fed for years. One is visibly crippled, with a foot that is bent in half. It struggles to sit on the telephone wires and limps when on the ground. But it has been a member of this group for years. Another is missing a lower portion of it’s beak. It often struggles to grasp certain foods. Both afflictions are obvious and effect their movement and behavior. But they are an accepted part of the group and are not harassed or bullied in any way. My thinking is they may be founding member of the group, i.e., the parents, and therefore the offspring grew up accustomed to these deformities and don’t perceive it as a threat to the group.

  3. Avatar photo Roberta Lee says:

    I agree that crow behavior is extraordinarily complex. I also noticed crows that are injured or disabled that are NOT attacked and are cared for. But I have seen crows attacked or mobbed also by other crows. But very interesting ideas and something to think about. I think family groups tend to chase away others from their territory. When I did crow rehab, we carefully returned crow to area it came from and the raucous welcome the bird received was amazing. When folks released crows to areas where they had no allies, they were mobbed.

  4. They also make a lot of noise when they find a food source (like me feeding them half a croissant).

    This seems counterintuitive given the noise attracts other competitors who will now also vie for the food. When more come then they have to fight over it.

    Any thoughts?

  5. Avatar photo David Carpenter says:

    Awesome information. Even here in downtown San Francisco, I, especially in the hours right before dawn have witnessed interesting if not barbaric behaviors by murders of crows.

    Sad to hear about the why’s of their attacking and killing the weak, but that’s kind of true about humans to some capacity.
    JS.

  6. Avatar photo Scotty McDonell says:

    There are particular and specific meeting places for distantly related and separate murders/flocks that could number in the thousands. UW Bothell has been studying one such group for over 15 years. Google UW Bothell crow study. Very interesting findings and theories.

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