A pair of Brown Goshawks, including size comparison photos of male and female

I ran into a pair of Brown Goshawks recently and was a little stunned at the size difference between the larger female, and the male. I know this is not uncommon, but the male almost looks like a different species. The pair is nesting near Alice Springs and after catching the morning feed, the female ate, then preened, then seemed to check her under sides (was wondering if her water had broken :-) ), and then flew to the nest, while the male pretty much stayed in the same spot the entire time.

"I think my waters broke!"