Manipulating vampire bats’ social relationships: not so easy

In my opinion, reciprocity in vampire bats has not been demonstrated unambiguously. This is because all the evidence to date has really been correlational. My singular obsession recently had been trying to setup and perform the "perfect" reciprocity test in vampire bats. Vampire bats are a good candidate for this kind of experiment because they … Continue reading Manipulating vampire bats’ social relationships: not so easy

Vampire bats regurgitating food to the wrong individual

Bats often roost in absolute darkness and must recognize others through sound and smell. After watching many, many hours of infrared footage of vampire bat food sharing, I've noticed that my vampire bats sometimes appear to make brief mistakes by sharing food with the wrong individual. A typical food sharing sequence starts with the donor … Continue reading Vampire bats regurgitating food to the wrong individual

Researchers, post your work online

I just submitted an invited review of the evidence of reciprocity in vampire bat food sharing. This allowed me to get out a bunch of data from unpublished studies, most of which were negative results from groups of vampire bats that did not share food with each other. Publishing negative results is important, especially as the difficulty … Continue reading Researchers, post your work online