The first year, it was 99% sure the female was western by the tail feathers, the yellow close to the lower mandible and the 'tchok' made to find the 3 chicks on the ground.
The second year, I wasn't able to tell for the female, as it was always hidden. I think the nest might have been destroyed and the pair moved on early to another location 6km west in july.
I spent some time there on the third year with no luck.