In the U.S. and Canada around 10 million birds belonging to 600 different species have been banded over the years, and a million or so have been recaptured and recorded.
根據日本鳥類繫放手冊記載，由目前留下的紀錄得知，至今美國、加拿大已大約給六百種、一千多萬隻的鳥戴上標識，接近一百萬左右有回收紀錄。