If there is a migration and a player has a matching bird, can he block it with other birds or does he have to put the matiching bird first?
You can block it with a different bird. As you pointed out, you may play birds on your wire in any order. So if you have 2 birds that you can pick up, you may place one of them so it blocks the other bird. It is a strategy I employ often. Building the sets just so on your wires is the trick to doing that. Thanks for your question.