Birds in action with 70-200mm F2.8 + TC17E-II

I'm not an expert in birds in flight, but I do like to play every now and then. These images were taken on a beach in California (near LA). Equipment used was the full frame Nikon D700 with the AF-S 70-200mm f/2.8 G IF-ED VR and TC17E-II tele-extender.