On A Whimbrel & A Prayer #5
June 20, 2017
It has been quite a while since our last updates and we are delighted to see that both KS and KU have reached their breeding sites!
KS and KU have chosen different areas to nest. Their nests are approximately 630km apart from each other in the Sakha Republic, Russia (Figure 1.).
KS reached the west of Momskiy Mountains in the last week of May (Figure 2.). After spending two days there to replenish, it flew 157km east across the 2000m high mountains to reach its nesting location.
Within a few days of arrival, KS has decided on a nesting area. The movement of KS during its first week was quite extensive, covering an area of up to 500km2 (Figure 3a). Movement during the second week significantly shrunk to an area of less than 100km2 (Figure 3b). In the third week, movements became further limited to an area of approximately 25km2, indicating that KS is most likely nesting (Figure 3c).
KU also arrived at its potential breeding area in late May. However, it spent over one and a half weeks exploring the area on both sides of a mountain before it finally decided on a nesting area 17km north of the mountain and 27km west of the River Yana in Russia (Figure 4.).
In the coming weeks, both KS and KU will be busy nesting and incubating their eggs. Later on their movement pattern might change again indicating fledging of their youngs.
On top of KS and KU, which successfully made their journey to the breeding grounds, we still regularly receive signals from both LA at Eighty Mile Beach, and JX from Palawan in the Philippines.
Whimbrel eating a crab by Grace Maglio. Used with permission © 2017.
Whimbrel flock flying by ALAN SCHMIERER via Flickr [CC BY 2.0]
All figures and tables prepared by Katherine Leung for the AWSG. Written by Katherine Leung for the AWSG. Edited and published with permission by Amellia Formby for Wing Threads © 2018.