This is a comparison of prey items brought by males v females (plus a few where I couldn’t be sure who caught the prey).
As you can see, there are items brought in all year, but clearly the main months are July and August (when courting), September (when the female is incubating) and October and November when there are chicks in the nest. In December there are fledgelings and prey is often brought to the nest either to feed returnees or while searching for them. Adults usually get the youngsters to chase them as part of their flight training.
