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Article
Piotr Minias, Auteur ; Jesus Gomez, Auteur ; Tomasz Janiszewski, AuteurBirds have evolved an astonishing diversity of egg pigmentation and this variation is driven by a complex interplay of proximate and ultimate factors. In ecological research, egg pigmentation is often measured at randomly selected points or regi[...]
Article
Jesus Gomez, Auteur ; Gustavo Linan-Cembrano, Auteur ; Macarena Castro, Auteur ; Alejandro Perez-Hurtado, Auteur ; Cristina Ramo, Auteur ; Juan A. Amat, AuteurQuantifying the pigment content in avian eggshells is important for the validation of hypotheses on the functionality of eggshell coloration. The few studies that have analysed whether eggshell coloration and spottiness are related to pigment co[...]
Article
Juan A. Amat, Auteur ; Araceli Garrido, Auteur ; Francesca Portavia, Auteur ; Manuel Rendón-Martos, Auteur ; Antonio Pérez-Gálvez, Auteur ; Juan Garrido-Fernandez, Auteur ; Jesus Gomez, Auteur ; Arnaud Béchet, Auteur ; Miguel A. Rendon, AuteurColourful plumage is typical of males in species with conventional sex roles, in which females care for offspring and males compete for females, as well as in many monogamous species in which both sexes care for offspring. Reversed sexual dichro[...]
Article
Carlos Talabante, Auteur ; Jesus Gomez, Auteur ; Alejandro Aparicio, Auteur ; Beatriz Arroyo, AuteurCapsule Cases of mixed clutches in raptor nests are very scarce in the literature. Among 279 harrier nests monitored between 1991-1996 and 2010-2011 in two different areas of central Spain, quail eggs were found in one harrier nest, and 13 other[...]
Article
Nico Varo, Auteur ; Andy J. Green, Auteur ; Marta I. Sanchez, Auteur ; Cristina Ramo, Auteur ; Jesus Gomez, Auteur ; Juan A. Amat, AuteurWe examined how availability of brine shrimps, Artemia parthenogenetica, influenced temporal aspects of foraging behaviour and population dynamics of moulting black-necked grebes, Podiceps nigricollis, from late August to early December in four [...]
Article
Jesus Gomez, Auteur ; Chantel I. Michelson, Auteur ; David W. Bradley, Auteur ; D. Ryan Norris, Auteur ; Lisha L. Berzins, Auteur ; Russell D. Dawson, Auteur ; Robert G. Clark, AuteurOur understanding of the annual life-cycle movements of small migratory birds has advanced rapidly with the advent of light-weight geographical positioning devices (i.e., geolocators), yet the effects of geolocators on reproduction and survival [...]
Article
Jesus Gomez, Auteur ; Gustavo Linan-Cembrano, AuteurColouration and patterning are widespread amongst organisms. Regarding avian eggs, colouration (reflectances) has been previously measured using spectrometers whereas spottiness has been determined using human-based scoring methods or by applyin[...]
Article
Jesus Gomez, Auteur ; Ana I. Pereira, Auteur ; Alejandro Perez-Hurtado, Auteur ; Macarena Castro, Auteur ; Cristina Ramo, Auteur ; Juan A. Amat, AuteurIn ground-nesting birds egg colour and appearance may have evolved due to opposite selection pressures. Pigmentation and spottiness make the eggs darker and have been suggested to improve camouflage. However darker and more spotted eggs may reac[...]
