Harris Hawk (Parabuteo unicinctus)

At the Arizona Sonoran Desert Museum the last raptors we saw in flight were Harris Hawk (Parabuteo unicinctus)  which I have seen a number of times before.  I was very lucky to have captured an image of this wonderful bird in flight,

This bird is unusual because it is one of the few birds of prey that hunts in packs. As a result, Harris Hawks  are more successful at capturing prey than individuals that hunt alone, but, of course, that means they have to share.

Harris’s are one of only two truly cooperative hunters in the raptor world. They will live in pairs in the tropical areas, or places where prey is abundant. In areas such as the Sonoran desert where prey has a lot of good cover because this desert contains a lot of vegetation,  they have been documented in groups as large as 9 birds.

That is why they are sometimes called ‘wolves of the air‘ taking their turns harrying a rabbit or squirrel and then chasing it out of cover towards other members that catch it. Here at the Museum they did not have to harry prey because the food was laid out for them. Briefly, the commentator giving us information through a loudspeaker tried to trick us into thinking they had found some prey were trying to pursue it into a corner. She soon acknowledged that this was not the case.

Sometimes Harris Hawks have been electrocuted by hydro lines, but sometimes other members of the group will return to help the injured hawk.  Thus, they carry their cooperating to extremes.  This cooperative view of species is sometimes controversial, as some evolutionists believe there is no cooperation in nature, just competition, but I think the better view is that cooperation is real, and Harris Hawks are an example of that.

They also nest in social groups that allows them to bond before they venture out together on hunting raids.