@bhive01 thanks - just about 5-6m for this one, they're not scared of us in the slightest (cue the massive sharp beak and opposable claws). That lens has 800mm maximum reach so that's almost overkill for them. I'm impressed with the clarity, as it was very dark under the foliage and I had to bump the ISO quite high to get a steady shot. I expected much more murky colours and noise in postprocessing