The optical zoom on the G3X stops at 600mm (e). The first two shots are at digitally zoomed well beyond that, but -- and here's the weird part -- so is the third one with the five geese. The equivalent focal length is bout 1200, f/5.6, 1/160s.
The first shot was at the same shutter speed (1/160s), but the deer was 1/20s. Maybe I held the camera steadier when shooting the five geese, but that is a guess.