Tweeters,-- sorry to digress from the Canada Warbler (!), but sometime ago a posting requested that we send our commemoratives to the UK in support of the RPBS or RSPB (our Audubon cousin). I wrote down the stateside address where I'd be "SURE" to find it!...but, alas--any help, etc.!
Thanks, Murray

(Mrs.) Murray Hansen
Graham, WA
MurrayH at aol.com