Observations on Remating in the American Robin, Turdus migratorius

In suburban Baltimore, from 1942 through 1950, I color-banded both members of15 pairs of Robins. At the end of 1951 the record of returns and rematings showedthe following: 1) Both members of eight pairs returned in the year following theirfirst known mating; there was one remating

HERVEY BRACKBILL, Auk, Vol. 69