Variable wheatear

I tried out my new Canon 600mm f4 lens today at WAMM Farms near Dibba on the east coast of the UAE. It was far too hot to lug around this bazooka sized lens so using the car as a hide I drive across the gravel plain where variable wheatear (Oenanthe (picata) picata) are often found in the winter months.

I'm never too sure what is variable about them, they always seem just black and white to me. I did get a few shots including one where it grabbed a praying mantis. The lens will get some getting used to but it should be good fun to use over the winter.