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Article
Golo Maurer, Auteur ; Phillip Cassey, AuteurGloss is a striking characteristic of avian eggshells that may affect both egg recognition and clutch predation. Previously, gloss has proved difficult to quantify objectively. Newly developed handheld glossmeters seem to offer a solution. We ev[...]
Article
Phillip Cassey, Auteur ; Ivan Mikšík, Auteur ; Steven J. Portugal, Auteur ; Golo Maurer, Auteur ; John G. Ewen, Auteur ; Erica Zarate, Auteur ; Mary A. Sewell, Auteur ; Filiz Karadas, Auteur ; Tomáš Grim, Auteur ; Mark E. Hauber, AuteurThe colourful appearance of avian eggshells is a prominent aspect of maternal reproductive effort in birds. Some differences in eggshell coloration have been reported to co-vary with various measures of maternal condition and these patterns supp[...]
Article
Golo Maurer, Auteur ; Steven J. Portugal, Auteur ; Phillip Cassey, AuteurThe thickness of avian eggshells is used to assess shell quality in wild and domestic species, as an indicator of environmental pollution and as an adaptive explanation for shell maculation. Both direct measurements and calculated eggshell thick[...]
Article
Golo Maurer, Auteur ; Steven J. Portugal, Auteur ; Phillip Cassey, AuteurCurrent research into the evolution and adaptive function of avian eggshell pigmentation, including maculation, has focused mostly on signalling-based and structural function hypotheses but ignored the potential consequences of shell pigmentatio[...]
Article
Kaat Brulez, Auteur ; Pankaj K. Choudhary, Auteur ; Golo Maurer, Auteur ; Steven J. Portugal, Auteur ; Rebecca L. Boulton, Auteur ; Simone L. Webber, Auteur ; Phillip Cassey, AuteurEggshell pattern scoring, a method to quantify the degree of surface maculation, can potentially be a quick, inexpensive and reliable method to obtain information on eggshell appearance and spot patterns. The key pigment responsible for red-brow[...]
