Specialization in plant-hummingbird networks is associated with species richness, contemporary precipitation and quaternary climate-change velocity

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