It is not uncommon to see members of a family of Snow Geese attack members of another family. These disputes for territory last but a few seconds with little or no harm done.
But, in those few seconds, very dramatic poses can be captured on camera.

I used my Canon 7D instead of my 5D Mark III for the session, because I though I needed the extra 60% reach of this 1.6 crop camera versus my full-frame. The extra zoom reach was great, but did I ever get a shock when I saw how much noise there was in the .raw files as compared to the 5D Mark III! I hadn't used the 7D in a while and forgot about how much cleaner the 5D Mark III is. It's a trade-off, and most of the noise is reduced post-processing.

Canon 7D with the 500L f4 lens with 1.4 Extender II handheld at 1/1000, f10, ISO 400, -1/3 exposure compensation. Small crop to level the horizon. My usual processing, but I did apply 3% of the cooling filter 82 to reduce an overly warm photo.

Cheers,

Mike