Day 037/21. A flock of geese.....

Our for a very nice walk in the sun today. Great to feel the warm sun on our faces.
Passing a field and this flock of Canada Geese took off and flew around very noisily until they settled again. Something spooked them into the air.
Or are they Brent Geese? I can't tell the difference in flight, and we do see both around here.