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Article
Tom A. Langen, Auteur ; Elena C. Berg, AuteurABSTRACT The factors affecting the timing of nesting in tropical birds remain poorly understood. We investigated the phenology of White-throated Magpie-Jay (Calocitta formosa) nesting in the dry forest of northwest Costa Rica, a region character[...]
Article
Elena C. Berg, Auteur ; John E. McCormack, Auteur ; Thomas B. Smith, AuteurThe adaptive significance of avian egg speckling patterns has been a subject of ongoing debate. We examined speckling in a population of Mexican jays Aphelocoma ultramarina exhibiting extreme eggshell variability. We sampled 167 eggs at 55 nests[...]
