Red-breasted Nuthatch (Sitta canadensis) Science Article 1
abstract
Life-history theory predicts that differences in reproductive effort and residual reproductive value amongspecies should result in differences in the level of risk that parents are willing to tolerate to themselvesversus their offspring.
CAMERON K. GHALAMBOR & THOMAS E. MARTIN, ANIMAL BEHAVIOUR, 2000, 60, 263-267