The golden lancehead Bothrops insularis (Serpentes: Viperidae) relies on two seasonally plentiful bird species visiting its island habitat

摘要: Adult individuals of the island pitviper Bothrops insularis have a diet based on birds. We analysed bird species recorded in gut this snake and found that it relies two out 41 island. When present, these prey were among most abundant passerine birds A few other migrant very occasionally as prey. resident (Troglodytes musculus) is island, but seems able to avoid predation by viper. commonly ground. However, during abundance peak tyrannid Elaenia chilensis more snakes vegetation than suggest one cause may be forage mostly vegetation, thus search for arboreal substratum.