Can't help but anthropomorphise, but in a changed way. I've always equated wings with what hands are in humans, but this picture makes me think of then more like legs, and bird's 'legs' as hand equivalent
The way I’ve read ornithologists describe it, it’s that they hold their head steady to focus on prey, and then bring their feet in line with their head to line them up as accurately as possible with the prey. They usually try to wait as long as possible to move their feet up, so that they can maintain their more streamlined shape and reduce drag.