Nectar and pollen of the invasive century plant Agave americana as a food resource for endemic birds

摘要: Capsule Flowers of an invasive plant species are more visited by native birds than flowers ornithophilous endemic plants.Aims To describe the bird guild and its behaviour visiting century Agave americana in insular environment to determine which factors affecting visitation rates.Methods We noted number inflorescences on Tenerife, Canary Islands. used multimodel inference generalized linear models analyse visits visitor richness.Results Eighty-one per cent were eight species. All fed nectar only Atlantic also pollen. Foraging varied among Visitation rate increased with density diversity flower characteristics decreased through day. The surroundings day.C...