Loss of reproductive productivity in hosts of the Brown-headed Cowbird (Molothrus ater), a nest parasite, may limit the success of conservation and recovery efforts that focus on restoring avian ...

Aim To investigate biogeographical patterns of cleptoparasitic Exaerete bee species and their orchid bee hosts. Location Neotropical region, from Central America to southern Brazil. Methods ...

Scientists have sought to better understand the evolutionary history of bacteria residing within lice. In this study, they see that bacterial evolution is driven by associations with lice, and louse ...

Louise Gentle works for Nottingham Trent University. If you saw the first episode of David Attenborough’s new BBC series Perfect Planet, you will have seen the astounding bloodsucking behaviour of the ...