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Migration Study of Eagles of Southern Siberia in 2014 – 2017

Imperial Eagle (Aquila heliacaa) named Anuyka.

Nestlings of the Imperial Eagle in the nest. Anuyka is the right one with the datalogger. Photo by Marton Horvat, 2014A male fledgling of the Imperial Eagle was tagged with ARGOS/GPS transmitter produced by Microwave Telemetry, Inc. on the 20th of July, 2014. This bird hatched out in a nest situated on the birch in the valley of Anuy river in the heights of Altai Region.

Anuyka remained near its nest up to 23rd of September and then started migration. From the 25th of September to the 1st of October he moved in the surroundings of the village Krasnoschyokovo, Altai Region, then on the 2nd of October the eagle went further in the southwest direction.


Anuyka's movements on September 1-28, 2014


On the 5th of October, Anuyka left Russian borders, on the 6th of October he flew right above the Ust-Kamenogorsk city in Kazakhstan, on the 11th of October crossed lake Balkhash and headed in southern direction.


Anuyka's movements from September 1 to October 12, 2014


Up to 14th of October Anuyka moved through Balkhash Area, which he finally left on October 15. He spent overnight between 15 and 16 of October in 7.5 km from Khantau and then advanced in the southwest direction. On the 17th of October Anuyka crossed Karatau ridge near Shayan, and then rested for several days on the banks of the canal in the outskirts of Aktobe village. On the 25th of October Anuyka crossed Syr Darya and went south. On the 27th of October, after spending overnight on the border between countries, Anuyka began his travel through Uzbekistan. In one day he streaked along Aydar Lake and skirted Nurotau Ridge. On the 28th of October Anuyka was in the foothills of the mountainous area in 20 km southwest from Navoiy.


Anuyka's movements on October 11-28, 2014


In the second decade of November, Anuyka “came for the meeting” with Klangusha. They were just in tens kilometers from the each other in the bottomland of Indus in Pakistan.


Migration routes of Anuyka (yellow line) and Klangusha (blue line) in October-November of 2014


Successfully having wintered in Pakistan, Anuyka started spring migration on March 15, 2015.


Anuyka’s movements in the winter grounds in December 2014 - March 2015

Anuyka has begun to migrate on March 15, 2015


For 15-22 March, Anuyka flew over Pakistan and Afghanistan, crossed the border of Turkmenistan and Uzbekistan on 24 March; passing Turkmenistan for 2 days he approached to Nuratau. Going round Aydarkul from the west on March 25 making wide loop with two overnight Anuyka returned to the general direction of the migration and moved to the Karatau. Probably to cross the Karatau Anuyka stopped between Shaulder and Aktobe in South Kazakhstan region on 28 March.


Anuyka’s movements in 20-30 March 2015

Nuratau workaround for 24-27 March 2015


However Anuyka did not fly through the Karatau, he returned to the south of the Syr Darya on 30 March and has stayed at the area between the Syr Darya and the Koksaray reservoir up to 10 April 2015.


Anuyka’s movements in March 30 - April 10, 2015


After long stop on Siirdarya river Anuyka moved north. On April 12th it crossed Karatau mountains near Shilik and Janatas and spent overnight in saxaul forest on the northern edge of Mujunkum desert in 15 km from the valley of river Chu. On the next day (13 April) Anuyka moved upstream river Chu and spent the day in the flood-plain forest in 10 km NW from village Komsomolskoye. After overnight on river Chu Anuyka spent some time in Mujunkum desert and then flew through Kazakh Uplands towards Irtiish river.


Anuyka's route on April 13 - May 3 of  2015


On May 9th Anyuka returned back to his motherland!


Anuyka's movements from the May 3 to the May 9 of 2015


From the May 10th to the June 7th inclusive Anuyka spent in Altai foothills of Altai region of Russia.


Anuyka's movements in May and up to 7th of June of 2015


Carcass of Anuyka. Photo by Sergey VazhovFrom the 21st of July of 2015 we received Anuyka’s signal from the stationary point. And after 26th of July we lost the signal. It became clear that the bird is dead and it lay somewhere in the dark place so the solar panel of transmitter discharged. On the 5th of August a work group of RRRCN (Sergey Vazhov and Roman Bakhtin) visited the position marked in the last message from Anuyka. The searching was hard due to very high grass and bushes covered the area and lasted for 1.5 hours. The carcass was found in the middle of a bush in 17 meters from position specified in message. Most probable the dead bird was moved there by the family of foxes observed nearby. The cause of Anuyka’s death remains unclear due to the bad condition of bird’s remains after foxes ate it and play with it. However, the most probable reason is deathly collapsing with the wires of high-voltage power line located in 125 meters from the point where carcass was found. And that’s the sad end of Anuyka’s story. Anuyka died in one year and one day after it got his transmitter in its native Altai foothills. Below is the full track of Anuyka’s movements to the wintering site (red line) and back (green line).


Anuyka's movements from July 20th of 2014 to July 21st of 2015


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