Specialization in plant-hummingbird networks is associated with species richness, contemporary precipitation and quaternary climate-change velocity. oleh Bo Dalsgaard, Else Magård, Jon Fjeldså, Ana M Martín González, Carsten Rahbek, Jens M Olesen, Jeff Ollerton, Ruben Alarcón, Andrea Cardoso Araujo, Peter A Cotton, Carlos Lara, Caio Graco Machado, Ivan Sazima, Marlies Sazima, Allan Timmermann, Stella Watts, Brody Sandel, William J Sutherland, Jens-Christian Svenning