Although not my best image, this photo gives a good indication of the difference between the female and the male Harrier and shows her owl-like facial features.
On their website at https://www.allaboutbirds.org/guide/Northern_Harrier/ So All About Birds states the following:
‘Northern Harriers are the most owl-like of hawks (though they’re not related to owls). They rely on hearing as well as vision to capture prey. The disk-shaped face looks and functions much like an owl’s, with stiff facial feathers helping to direct sound to the ears’.
Note the white strip across the top of the tail as well, it’s a clear indication of an Northern Harrier, both male and female.
