Incubating birds are often times target for predation which could come from unexpected places. Sometimes even from potential prey items!! The Orange-breasted Falcon (Falco deiroleucus) population is probably declining in Central America and researchers are trying to figure out why.
In 2008, Marta, Yeray and myself, members of Whitehawk who at the time were working for The Peregrine Fund, were able to document how a Vampire Bat was parasitizing a female Orange-breasted Falcon while she was incubating, something that had never been observed or described before. Follow this link to read the article published in the prestigious Journal of Raptor Research about this interesting interaction.