Tag Archives: Animal Behavior

Laterality paper is out!

Posted on by
Reply

Science is sometimes slow- case in point our recently published paper on left-right side biases in social behaviors in the sage grouse. The idea for this paper first surfaced in 2010 at the International Ornithological Congress in Campos do Jordao in Brazil. Gail and I saw a couple of plenary talks related to visual fields and left/right biases. From that we had a year or so of data collection from our videos, then about 2 years of cycles of submitting a manuscript, waiting for reviews, revising, resubmitting, etc etc etc. Feels great to finally have this out!

Thanks again to Emily, Michelle, Jennifer and Tawny who were undergraduates who helped figure out how to sample and measure the side biases, and Melissa (former Masters student) who spearheaded our collection of agonistic behaviors.

Link to paper

Abstract:

Lateral biases in behaviours are common across animals. Greater laterality may be beneficial if it allows for more efficient neural processing, yet few studies have considered the possible importance of indi- vidual variation in lateral biases in wild animals, particularly for social behaviours. We examined lateral biases in lekking greater sage-grouse, Centrocercus urophasianus, a species in which males show lateral orientations during aggressive encounters and courtship interactions. For aggression, we found no sig- nificant lateral bias in fights, but when examining another agonistic behaviour, the side-to-side facing- past encounter, we found a left-eye bias but only in males that successfully mated with females. For courtship behaviour, we found that successfully mating males were more strongly lateralized than nonmating males, but the direction of laterality depended on whether males were using their binocular frontal field (left-eye bias) or monocular lateral hemifield (right-eye bias). Bias depended on social context as well; nonmating males showed a bias in courtship orientation only when far from the female. Our results reveal a complex pattern of laterality depending on the mating success of the male, his behaviour and the social environment in which he is acting. We found support for the hypothesis that greater laterality may be beneficial, although the mechanism for this relationship in this species remains unknown.

Request for Photos

Posted on by
Reply

Usually I’m posting my own photos here, but the tables have turned. Gail, Conor and I are finishing up a review paper, and would like some photos of some of the animals we mention in the paper. If you have pretty photos of any of the following (that you’d be willing to donate), please let me know ASAP via email.

Praying Mantis: Pseudomantis albofimbriata

wolf spiders (ideally MALES) Schizocosa rovneri

Either of the following anoles, ideally displaying on a tree trunk
Anolis cristatellus or A. gundlachi

Spotted egg butterfly Hypolimnas bolina ideally flying over a female

calling gray tree frog Hyla versicolor (still Hyla, right?)

2013 / 2014

Posted on by
Reply

Juvenile Male Sage-Grouse, Cottontail Lek

2014 already has it’s talons in me, but I am pausing a moment to share some recollections of 2013 that was.

Last year I built upon my first full teaching gig in 2012. I taught both Animal Behavior during the summer and Evolution in the fall of 2013. The summer course was challenging because of the accelerated pace and because of some necessary travel, both scheduled and unscheduled, in the middle of the summer term. I was thankful to have an excellent co-instructor (Jamie Bunting), and I think we ended up putting together a nice class. The fall evolution course went well. Having a set of notes to work from made a huge difference in my sanity- I no longer felt quite as much of a ‘trying-to-keep-up-on-a-high-speed treadmill’ feeling. This let me put a lot more of my effort into improving the course. I was much happier with the exams in terms of length and clarity, and the homeworks and discussion were better integrated with the lecture material. To some extent this was behind the scenes stuff, and led to (I think) a comfortable class in which expectations for both me and the students were clearly presented. I look forward to working harder on lecture formats and classroom interaction next time I teach.

Research-wise, we got several projects out the door. These included our collaboration with Sergio Pellis on fighting dynamics in the grouse, an applied paper on the effects of radio collars on male sage-grouse in conjunction with Dan Gibson and colleagues at the University of Nevada Reno, a commentary on the utility of avian vocal studies that rely on calls instead of songs (with my former labmate Lauryn Benedict), and a review of male cooperation that I completed with other lab mates Sam Diaz-Muñoz, Eileen Lacey, and Emily DuVal. We got some of sage-grouse work out the door as well, an acoustics paper led by Rebecca Koch and our laterality analysis- these are in revision though.

Male Sage-Grouse with the >30g Encounternet tag. Photo GLP.

Our new telemetry tags moved forward in 2013 as well. These tags are intended to give us an unprecedented window into the movement and activity of male grouse off the lek. We were able to do some proof of concept of them in the field at the end of the 2013 season. We followed that up with some testing of the accelerometer function by using some captive chickens in the Avian Sciences facility on campus. Now we’re just waiting for the final tags, and we’ll be ready to break a lot of new ground with our field studies in 2014.

Steamboat Springs, home of the Winter Animal Behavior Conference

2014 is already shaping up to be an exciting year. I got to attend the Winter Animal Behavior Conference a few weeks ago- this is a small, intimate meeting with just a few dozen top behavior folks. The conference strives for a really fun atmosphere. I presented some early analyses looking at differences in the distribution of male mating success on leks of different sizes. It feels great to finally be at the point where we can begin to leverage the multi-lek, multi-year nature of some of our data. I’m hoping that these sorts of analyses can complement our more focused studies and help round out the picture of how “negotiation” on the lek proceeds.

Sage-Grouse usually cut all but the base of the leaf.

Along with making use of our older data, we’re also breaking new ground in the field. In addition to the aforementioned tags, we will conduct our first systematic plant sampling to learn more about variation in quality of the food the sage-grouse depend on during the winter.

 

 

This year should see some important and much needed modernization of our workflows as well. We’re finally upgrading our fleet of video cameras to move away from miniDV tapes and onto recording into digital media files on SD cards. This change will necessitate a host of other lab upgrades, including new computer workstations for viewing the video files (we are currently using a trio of refurbished laptops that are literally falling apart) and a robust server to distribute the video files. We may also finally move at least some of our data into a true database instead of simple spreadsheets. These transitions will require quite a bit of planning, but on balance should be big improvements.

Teaching Update- Summer 2013

Posted on by
Reply

The six-week summer session Animal Behavior course (NPB 102) is over (or most of it, all that’s left is the grading). Thanks to my awesome co-instructor Jamie Bunting, who did a fantastic job this summer. Also thanks to Tom Hahn for the opportunity and all the advice and resources that helped make this a successful class. And Myfanwy, who is actually doing the grading, and Julie who stepped in to help proctor this morning. This was my first summer class and it was as challenging as I thought. Organization is tricky, with fewer lectures overall but each one being close to 2 hours, finding the balance of breadth and depth took a lot of thought.

The students seemed to respond positively- besides a general lack of drama, I’ve had one student approach me about research opportunities already, and another send a “ you guys are awesome” email. Anyway, nice to have this under my belt. Several nice “thank you’s” and “it was a very interesting class” as the exams came in as well.

Next up: I can start to turn my attention to teaching Introduction to Evolution (EVE 100)  this fall. I think it will be a vastly different experience this time around compared with last year when I was teaching it for the first time. My practice with online assessments in Animal Behavior this summer is giving me some ideas of how to change the homework a bit, hopefully freeing up some time and effort for everyone involved to add in some more interesting assignments. I also think I did a better job of integrating the textbook reading in with the lectures this time.