I don't know about their migratory patterns. They obviously move, but I'm guessing that they prefer to stay where they find a regular source of food and tolerable weather.

This could be because I'm in a more temperate climate, but at the public lakes around San Antonio, they make DAILY flights to feed on the water just after daylight and stay all year.

For the above reasons, they do not get a free pass at our ponds.

"Only after sorrow's hand has bowed your head will life become truly real to you; then you will acquire the noble spirituality which intensifies the reality of life. I go to an all-powerful God. Beyond that I have no knowledge--no fear--only faith."