Effect of nectar-robbing birds on fruit set of Fuchsia magellanica in Tierra del Fuego: a disrupted mutualism

birds bosques calidad colibri color colour couleur developmental stages etapas de desarrollo fleur flores flowers forests fructification fruiting fuchsia graine hummingbirds latitud latitude morphs mutualism nectar oiseau oiseau mouche ovaire ovaries ovarios polinizadores pollination pollinators pollinisateur pollinisation quality seeds semilla simbiosis symbiose symbiosis