Reference

Franzisco Ruiz-Raya, Manuel Soler, Gianluca Roncalli, Teresa Abaurrea, Juan Diego Ibanez-Alamo (2016): Egg rejection in blackbirds Turdus merula: a by-product of conspecific parasitism or successful resistance against interspecific brood parasites? – Frontiers in Zoology – 2016: 16-0001-16-0012.