• Egg arrangement in avian clutches covaries with the rejection of foreign eggs 

      Polacikova, Lenka; Takasu, Fugo; Stokke, Bård Gunnar; Moksnes, Arne; Røskaft, Eivin; Cassey, Phillip; Hauber, Mark; Grim, Tomas (Journal article, 2013)
      In birds, the colour, maculation, shape, and size of their eggs play critical roles in discrimination of foreign eggs in the clutch. So far, however, no study has examined the role of egg arrangement within a clutch on ...
    • Geographic variation in egg ejection rate by great tits across 2 continents 

      Liang, Wei; Møller, Anders Pape; Stokke, Bård Gunnar; Yang, Canchao; Kovařík, Petr; Wang, Haitao; Yao, Cheng-Te; Ding, Ping; Lu, Xin; Moksnes, Arne; Røskaft, Eivin; Grim, Tomas (Journal article; Peer reviewed, 2016)
      Hosts of brood parasites may vary geographically in their ability to resist parasitism. In contrast, geographic variation in defenses, such as egg rejection, is not expected to be present or vary geographically in unsuitable ...
    • Host selection in parasitic birds: are open-cup nesting insectivorous passerines always suitable cuckoo hosts? 

      Yang, Canchao; Stokke, Bård Gunnar; Antonov, Anton Tinchov; Cai, Yan; Shi, Suhua; Moksnes, Arne; Røskaft, Eivin; Møller, Anders pape; Liang, Wei; Grim, Tomas (Journal article; Peer reviewed, 2013)
      How do potential hosts escape detrimental interactions with brood parasites? Current consensus is that hole-nesting and granivorous birds avoid brood parasites, like common cuckoos Cuculus canorus , by their inaccessible ...
    • Rapid development of brood-parasitic cuckoo embryos cannot be explained by increased gas exchange through the eggshell 

      Portugal, Steven J.; Hauber, Mark E.; Maurer, Golo; Stokke, Bård Gunnar; Grim, Tomas; Cassey, Phillip (Journal article; Peer reviewed, 2014)
      Obligate avian brood parasites lay their eggs in hosts' nests and play no role in the provisioning of the progeny. Many parasites, including Cuculus cuckoos, hatch before their hosts and the altricial chick evicts hosts ...