Thank you for the interesting comment. The Harrier Hawk here was previously known as a "Gymnogene", and I still favour the old name, as it described its athletic abilities to search for prey. We don't have any black harrier hawks here, and ours also cannot imitate the songs of hens. Interesting as I got one again today, half an hour ago.
Take a look.

I will ask Mrs. Google to show me what a black harrier hawk looks like.
Until then take care and thank you for the compliment about my writing skills.

!PIZZA and !LUV