Canadian Geese living along the Columbia River, live there year around. They fly in their V daily , year around, to the Blue Mountains and back to train the young birds how to migrate, even though they haven't for many years. I watch them every morning on my walks, and it is amazing. Should the winters get very cold and they can't winter along the river, they could still migrate, even though they haven't for generations and no bird that has migrated is among them. I suppose the daily flights are also to keep the little guys fit.
Scientist that have studied them, say they still fly the path with perfect heading, to the Blues, that would take them to their ancestral grounds south if they continued over the mountains. I find this amazing! I love watching when for the first time, the little guys get to take the apex of the V. Their teachers leave them there, for less than a minute, but they know the drill. The racket they make shouting out instructions, is unbelievable. How they know who is talking to who, has me baffled.