A studio for bird study

Tag: raptors

Published in Ambio: Status and trends of circumpolar Peregrine Falcon and Gyrfalcon populations

by Bryce W. Robinson

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Image copyright Ambio 2019

 

I had the privilege of being included in a recent publication on the status and population trends of two Arctic breeding falcons, the Gyrfalcon and Peregrine Falcon. In this paper, we report population trends for 12 sites across the Arctic where monitoring programs have been in effect.

This work conducted by the Arctic Falcon Specialist Group is important since it combines the efforts of biologists worldwide to form an understanding of the status of the worlds Arctic breeding falcons. The take away is that for the most part, both species seem to be stable, and that continued monitoring is important because of their place as focal ecosystem components in the Arctic.

 

An Illustration of Some Members of the Genus Buteo

by Bryce W. Robinson

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18×24″ Gouache on watercolor paper. From top left: Rough-legged Hawk (Buteo lagopus), Swainson’s Hawk (Buteo swainsoni), Broad-winged Hawk (Buteo platypterus), Red-tailed Hawk (Buteo jamaicensis), Red-shouldered Hawk (Buteo lineatus), and Ferruginous Hawk (Buteo regalis). Purchase limited edition prints here.

I’ve been illustrating raptors in flight for some years now, which really took off when I met Jerry Liguori. Jerry took me under his wing, so to speak, and filled my head with everything he himself has learned over his many years studying the identification of raptors, particularly in flight. His tutelage accelerated my skills and knowledge in raptor identification, and I can confidently say that without his selfless teaching, my illustrations wouldn’t be the same.

I’m currently focused on tuning in my raptors in flight. I am about to start some large illustration projects focused on these taxa, so I am working to develop my technique and process as well perfecting relative shape and sizes. It’s a challenge, because illustrating each correctly involves so much more than the obvious differences in plumage. What makes each unique are shape, proportion, and posture. I’ve found posture to be the most challenging aspect to capture, since this seemingly simple factor has so much power over whether the bird looks real or not. Furthermore, in flight postures and shapes are influenced by the direction and motion of a bird in that moment in time. For instance, a bird soaring has a unique shape but because of the position of the viewer, that shape may be different for each wing because of the birds posture and how wind or resistance bends the outer primaries. To understand and master this effect is going to take repeated sketching and exploration.

Purchase an 18×24″ limited edition archival print (30 available) of this illustration in the shop. Your support helps me continue to refine my illustration, so thank you ahead of time! Also, be sure to add Jerry Liguori’s unique guidebooks to your library. Jerry has taken raptor identification to the next level, and his guidebooks are a wealth of information for mastering in-flight identification. You can find his books here: Jerry Liguori’s Hawk’s From Every Angle and Hawks at a Distance

Just Published: Applied Raptor Ecology: Essentials from Gyrfalcon Research

by Bryce W. Robinson

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The Peregrine Fund just released a new book, “Applied Raptor Ecology: Essentials from Gyrfalcon Research”. This book serves as a techniques manual geared towards providing early career researchers with information and a stepwise guide for conducting various research on raptors. This information is also supplemented by mock data, and R code to help the researcher begin to form skills in R and analysis.

Although I am the clown in orange on the cover, my true contribution is found inside the book. I contributed as an author of a chapter – Quantifying Diet; an appendix – Guidelines for Conducting a Camera Study of Nesting Raptors; and as coauthor of an appendix – A Photographic and Morphometric Guide to Aging Gyrfalcon Nestlings.

For more information and to purchase the book, go here:

http://science.peregrinefund.org/applied-raptor-ecology

*PDF’s of each chapter will be available January 2018