I found a roadkill goose the other day and wouldn't you know it, it was double banded. The part that I find really weird however is that both bands were affixed by the same bander on the same day. I was wondering if anyone would have an idea as to why they would do this. The only reason I can see is that they're testing the durability of a new style of band (the one band is the normal thick one I'm use to seeing but the other is smaller and thinner). I may end up contacting the bander to ask but thought it would be worth asking here first. Thanks!