Abstract
Abstract Using a supplemental feeding experiment, we investigated the ability of adult Horned Puffins to decrease provisioning effort in response to reduced nutritional requirements of chicks. We found no difference between experimental and control groups in parental provisioning before supplementary feeding was initiated. After receiving supplemental food for seven days, experimental chicks grew faster, gained more mass and received 87% less food from their parents than did control chicks. These results demonstrate that Horned Puffin parents can decrease food provisioning in response to a decrease in their chick nutritional requirements. Reduccion del Esfuerzo de Aprovisionamiento en Respuesta a la Manipulacion Experimental del Estatus Nutricional de Pichones en Fratercula corniculata Resumen. Usando un experimento de suplementacion alimenticia, investigamos la habilidad de adultos de Fratercula corniculata de disminuir el esfuerzo de aprovisionamiento en respuesta a una reduccion en la demanda nutricion...
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