Bicknell's Thrush Overview, All About Birds, Cornell Lab of Ornithology

Bicknell's Thrush has an unusual mating system. Both males and females mate with different partners. Each nest has young from different males, and males may have young in several nests. More than one male feeds at most nests.

Males do not hold strict territories, and several different males may sing from the same area within one hour.

The oldest recorded Bicknell's Thrush was a male, and over 11 years, 11 months, when it was recaptured and rereleased during banding operations in Vermont.