G’day Paul,
I must admit I am not personally sold on the idea of a different age structure for brown Falcons of the Central Australian region but I am still keen to listen to all ideas on this. I have now collected a lot of images from Central Australia of pale and rufous type adults and as Chris Watson has already mentioned at the start of this thread they predominantly have yellow soft parts, excluding the young birds. It looks like the norm for the area to me based on the photos, but this is clearly not a definitive answer. None of the photos were taken because the photographer was aware of the soft part colouration so it is a completely unbiased collection. I am very keen to see images of birds from your Werribee study showing the yellow facial soft parts, do you have any you can send me.
Cheers Jeff.
