Diet of the Horned Lark (Eremophila alpestris peregrina) at La Copa dam, Boyaca, Colombia

作者：Botia Becerra Jorge^*; Angela Echeverry Galvis Maria

来源：Ornitologia Neotropical, 2010, 21(4): 497-506.

• Diet
• Horned Lark
• Eremophila alpestris peregrine
• arthropods
• foraging
• Colombia

Diet of the Horned Lark (Eremophila alpestris peregrina) at La Copa dam, Boyaca, Colombia. - The only member of the Alaudidae family that is found in the Neotropics is the Horned Lark (Eremophila alpestris peregrina). This subspecies is endemic to the highland plateau between Boyaca and Cundinamarca in central Colombia, and is currently considered Endangered. For seven consecutive months, we surveyed the diet of the Horned Lark at La Copa dam. The bulk of the diet was made up of arthropods like Arachnida, Coleoptera, and Hymenoptera, with beetles being the most common and important prey item. The diet of the Horned Lark varied seasonally in terms of what proportion was made up of seeds versus arthropods. The latter were always more important in the diet, probably due to the low abundance of seed and plant material in the area, and the high abundance of arthropods throughout the year. The consumption of seeds was highest during the periods of E. a. peregrine reproductive activity in the area. Dietary information for species in any category of threat will allow us to develop more efficient management plans of viable populations.

• 出版日期2010