Experimental, Canon 5.6 400+Canon 2X Converter

I took these from the back eastern corner of the back yard using my 400mm lens with a 2X Converter. I had to focus manually so on some of these I missed very slightly. The ones that I hit it on are amazing to me considering all of the glass they had to pass through. Some of them are cropped very slightly due to having to straighten them. Where there are two of the same image, the first is the original size and second is cropped. Sammy was walking toward me while I was trying to focus on him, so it is amazing they came out that well. The last one of the bird is incredible to me. All things considered!!!