Thanks to everyone who commented on the eagle photos. I've been reading these forums for a while but thought I might as well contribute also. I have good access to these eagles in the wild as we have two very accessible nests (one with live webcam that successfully fledged triplets this season). The close headshot is one of these 3 fledglings. The adult landing on the tree is the parent from that nest. The adult perched is the parent from the other nest that raised 2 fledglings this year.
While I'm out shooting the eagles I occasionally get lucky with a flyby from some other raptor species. Here is a shot from Friday of one such flyby by a male Northern Harrier. I should also note that all these images are shot handheld. I use the RRS replacement foot for a good handle and as a plate when I do use a tripod or monopod. The lens is handhold-able for a short time to follow the bird as it flies across, the rest of the time I either have it on the ground, on my tripod to rest it, or just carry it by the foot at my side.