I observed this a few times when hacking aplomados for the P-fund. It's hard to know how intentional it is, or if it's really cooperative, when it's a handful of juvenile birds, but the pattern was pretty similar. Larger females tend to be the ones to dive down into cover to chase birds while the males are more aerial and wait on above the females, or at least sit in the top of the bush that the female is trying to flush something out of.

One summer we also had a male from the previous year's release, now an adult, who would hunt small birds and then bring them back to feed the juveniles we were hacking. We were worried he'd try to drive the youngsters off, initially, so it was a real relief to see him taking on a parenting role instead.