I have enjoyed reading the emails with all of the ideas about how to mitigate the impact of our birding travel on the environment. Two more ideas to throw out there:
1. If you are a member of a travel club, Better World Club is a travel club that advocates for the environment and helps us mitigate our impact; they even offer Bicycle Assistance 2. Public transit - I've been trying to learn how to use transit in my area and while it is not great, the more of us that use it, the more funding it will get, reducing our carbon footprint.