English translation of Park (1988) Dominance relationships in a colony of vampire bats. Korean Journal of Zoology.

Rachel Crisp is currently writing her masters thesis on dominance interactions in female vampire bats. Males have a clear dominance hierarchy in competition over roost territories, but do the female vampires have a dominance rank? If so, does it strongly correlate with cooperative interactions? Her work should come out next year! Despite all the work on … Continue reading English translation of Park (1988) Dominance relationships in a colony of vampire bats. Korean Journal of Zoology.

Latest paper: social bet-hedging in vampire bats (and two other recent and related studies)

Our latest paper here.  Also some early press here. There are actually three recent papers on social networks and the benefits of network size in primates (by Laurent Brent and co-authors), songbirds (by Josh Firth and co-authors), and bats (by me and co-authors): Family network size and survival across the lifespan of female macaques by L. … Continue reading Latest paper: social bet-hedging in vampire bats (and two other recent and related studies)

Latest paper: Reproductive seasonality, sex ratio and philopatry in Argentina’s common vampire bats

It can be found here. Summary: 35 years of field observations 13,642 mist-net captures and 181 whole roost captures vampire bats in Argentina (near the southern limit of their range) have a reproductive season (unlike most other places) we have new records for oldest wild vampire bats: 16 and 17 years we corroborated prior evidence … Continue reading Latest paper: Reproductive seasonality, sex ratio and philopatry in Argentina’s common vampire bats

A new field site in Panama

I am hoping to develop some new long-term field sites for future work on vampire bats. On March 27, I traveled with Austin Garrido, Rob Mies (director of the Organization for Bat Conservation), his daughter Georgia Mies, and labmates May Dixon, Rachel Crisp, Katharina Eggert, Hugo Narizano, and Julia Vrtilek to Lake Bayano, a two-hour drive … Continue reading A new field site in Panama

New paper: risk exaggerates nepotism in vampire bats

Here's the paper. In evolutionary biology, we often draw a line between "altruism" and other cooperative traits. Altruistic traits are special in that they lead to a net cost to one's survival and reproduction. Some traits are clear cases: when a bee stings you it dies, so the suicidal bee sting is an altruistic trait. But … Continue reading New paper: risk exaggerates nepotism in vampire bats

Recent media article about vampire bats and friendship

Sapiens Magazine just put out an article about vampire bats and friendship. The author Leah Shaffer did a great job, probably the most accurate media story on the vampire bats I can remember. Usually, journalists get a lot wrong, but they did a great job fact-checking this one. Also, below is an edited transcript of … Continue reading Recent media article about vampire bats and friendship

Social inheritance in vampire food-sharing networks?

We are soon to be wrapping up several analyses and starting some new ones. I want to mention one analysis that never really got off the ground, but it's a good idea. My intern Jana asked me a great question: Does a female vampire bat inherit some of her food-sharing partners from her mother? This question … Continue reading Social inheritance in vampire food-sharing networks?

New paper on vampire bat communication

Our newest paper is Common vampire bat contact calls attract past food-sharing partners in the journal Animal Behaviour. You can download the paper for free until June 12, 2016 here at this link: http://authors.elsevier.com/a/1SwLKmjLdkSa It's a simple playback experiment where we disentangled kinship and food sharing as predictors of a bat's attraction to calls of different individuals. … Continue reading New paper on vampire bat communication