First Banding of a Bird
On 24th September, 1905, James Henry Fleming placed band No. 1 on the foot of a robin in his garden at 267 Rusholme Road, Toronto. This was the first wild bird in Canada to be marked with a numbered and recorded band. From this beginning has come a greatly increased knowledge of bird migration.
Plaque via Alan L. Brown's site Toronto Plaques. Full page here.