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Article
J. Simek, AuteurBreeding fidelity was studied in Red-backed Shrike, Lanius collurio, in the Czech Republic from 1990 to 1999. The males tend to return more frequently than females, both to the whole research area and to the particular territory. The return rate[...]
Article
R. Lezalova, Auteur ; E. Tkadlec, Auteur ; M. Obornik, Auteur ; J. Simek, Auteur ; M. Honza, AuteurIn birds with hatching asynchrony and sexual size dimorphism, chicks hatched earlier and later in the laying sequence usually suffer different mortalities due to uneven abilities to compete for food, especially in poor years. If sexes differ in [...]
