Yesterday I saw a Snow Goose wearing a yellow neck collar with two letters and two numbers: UP and 62. Neck collars have been used to study the life and migration of these geese. A yellow collar means that it is a female. The letters and numbers probably mean something also, but only the researchers would know that.
Right on cue, the female turned in my direction to allow me a better look at the collar.
Suddenly, the male Snow Goose signaled they should take off.