U. Tuvshin releases Mongoljin after 15 minutes of handling. Photo: B. Dashnyam.
Bustard "Songuul," newly fitted with a backpack transmitter, seconds before her release. With G. Natsag and D. Dorjhurel. Photo: B. Dashnyam.
All mortalities recorded in our tagged cohort of Great Bustards occurred on the migratory pathway or wintering grounds. Here, Sachokchin’s remains in the Gobi Desert on the Mongolia-China border. Photo: B. Dashnyam.
D. Dorjhurel uses a radio antenna with daughter Urnaa to monitor the location of Sondor after her release. Photo: B. Dashnyam.
The winter movements of Nergui (orange lines), overlaid on a satellite image from Google Earth. The area she occupied was composed of a matrix of farmed fields near a river.
When Dolgoon was captured, she was with two large chicks, including "Don." Photo: D. Erdenetsetseg.
Interviews with local families confirmed that Dolgoon's death at a migratory stopover later that fall was due to poaching. Don has not been spotted since. Photo: A. Kessler.
Through the use of the transmitter, we were able to ascertain that bustard Sachokchin was nesting. Photo: G. Natsag.
We discovered Bosoo bustard's transmitter and harness discarded alongside a mining road in the south Gobi Desert. Human traffic, and thus the risk of poaching, is increasing as gold and coal reserves are developed.
A close-up photo of Songuul, tagged in 2008. Photo: B. Dashnyam.
Transmitters also allow us to track a bird over a long period of time and monitor rates and causes of mortality. Tsashan died of natural causes on her migration. Photo: A. Kessler.
D. Dorjhurel and Odgerel hold Yagaana and her large chick as they assess the suitability of attaching a transmitter to the mother. Photo: B. Dashnyam.
Tsengel died after a collision with this electric line in central China. Photo: P. Carr.
A resighting of Bayan through a telescope, one year after his transmitter was attached. Photo: B. Dashnyam.
Dorj and Erdenetsetseg display the transmitter of Toson and some of her feathers, found at the site of her death. It appears this bustard died due to predation, possibly a fox. Photo: A. Kessler.
Nergui was the first Asian Great Bustard we harnessed with a transmitter, seen on her back. Using telemetry, we have found that Mongolian Great Bustards frequently nest at forest edge, in contrast to the western subspecies.