A studio for bird study

Tag: video

Long-billed Curlew Flight Display

by Bryce W. Robinson

The Long-billed Curlew has a bizarre courtship flight display, not unlike many other members of the family Scolopacidae. The male flies tirelessly in broad undulating circles, broadcasting a mournful whine into the sagebrush strewn hills. Having always been enamored by the spectacle, I made it a goal and was extremely pleased to capture the display on video.

If you haven’t heard of the Intermountain Bird Observatory’s Long-billed Curlew Project, I’d like to use the above video to make an introduction. Long-billed Curlews are facing threats in the west, on multiple levels. For many years now the impacts of landscape change have added stress to nesting curlews. Habitat loss from development, degradation from grazing, ATV recreation, etc. are all causing added stress to the birds ability to reproduce. On top of that, IBO has found that there is an issue with folks shooting curlews. What reasons there could be for shooting a curlew escape me, but it is an issue nonetheless and one that IBO attempts to overcome through education and outreach.

On top of these issues, these birds are facing threats off their breeding grounds as well. Contaminants on the wintering grounds add yet another stress to these birds. IBO has deployed satellite telemetry units on a handful of birds to fully understand their year round distribution and where particular populations may face threats.

Stephanie Coates, an all-star of bird biology, recently started her pursuit of a master’s degree in biology at Boise State University. She is working with IBO on their curlew project, and has started a website to chronicle her work and the work of the field crew. Follow along and check out live viewing of curlew movements via satellite imagery, great photos from the field crews, and more.

Visit curlewcrew.com

Singing Sagebrush Sparrow

by Bryce W. Robinson


I took this clip the other day in the Sagebrush strewn landscape of southwestern Idaho. I recorded the video by digiscoping using my ZEISS Diascope 65 T* FL. Normally, Sagebrush Sparrows are busy singers and will generally tolerate you in the area so long as you don’t pay them too much attention. But for whatever reason, no matter how far I was the sparrows on this morning were extra timid. On top of that, the wind wasn’t helping. Due to the wind and the distance from the bird, you can’t really hear the singing. To add one more difficulty to getting the song recorded, there was a lone bull nearby that was constantly growling. I didn’t know bulls growl… So, there is room for improvement for recording video of a singing Sagebrush Sparrow.

Anyway, I’m still pleased with the outcome. I do think I need an external, directional microphone for recording singing birds. Digiscoping really caters to sparrows and other passerines that are more flighty, but it doesn’t capture the song well. Still, It’s really nice to have quality glass to help with the effort. I’m really excited to apply the technique to some of Alaska’s more timid birds this summer, such as the singing Arctic Warbler and displaying Bluethroat.

Brant Feeding Behavior

by Bryce W. Robinson

I captured this clip two springs ago along the Washington coast. The short clip shows the feeding behavior of an immature Black Brant – Branta bernicla nigrigans. I find it interesting because it portrays the feeding behavior, but also shows one example of what a sea goose eats.

I felt confident that this bird was taking a break from some direct migration. It was with an adult bird who was resting on the rocks just out of view of the camera. One bird seemed distracted by fatigue, the other by the need to feed. I did take advantage of that fact, and captured what I believe is an enlightening clip that can be referenced by others in the future.

Black Turnstone Feeding Behavior

by Bryce W. Robinson

 

It is a great experience to see behaviors that obviously gave rise to a creature’s name. The Black Turnstone – Arenaria melanocephala is black, and feeds in the most interesting way as its name implies. It frequents rocky shorelines and turns stones to find food. I was lucky enough to find two birds staging along a tidal pool in western Alaska. The birds were living up to their namesake, turning stones vigorously in search of food.

Another aspect of observation that gives me satisfaction is recognizing a behaviors role in shaping morphology. The turnstone has a unique bill shape, adapted to gain leverage and flip stones in an effortless manner. What I’d like to investigate is the difference in muscle morphology in the neck and back between other close relatives that do not engage in this behavior.

“Behavior birding” holds a treasure trove of opportunities to ask questions and learn great lessons that further understanding of the bird world.