Imperial Eagle (Aquila heliaca) in the Tatarstan Republic from 2012 to 2018 Rinur Bekmansurov Foto Rinur Bekmansurov and Nadezhda Bekmansurova
Tatarstan Republic - the territory of monitoring. Area 67 847 km ²
Distribution of the Imperial Eagle in the Second Decade of the 21st Century The database contains information on 181 habitats in the nesting period (http://rrrcn.ru/birdwatching/ web-gis) Currently known 125 nests. The probable number is 190 to 210 breeding pairs.
Variants of location of nests in landscapes
Nesting biotopes (habitats) (n=125)
Nests in the fringe areas of forest tracts Nests in an artifical forest line 8
5
7
49 21
Nests on single trees or groups of trees Nests in strips of forest in floodplains of small rivers and streams
35
Nests on power transmission towers Nests on rural cemeteries
Most nests are located near the settlements
View from the nest
Nest in a rural cemetery
Distans bitween nests
6,4 km, min 2,2 km
8,2 km min 6,8 km 4,2 km 6,45 km min 3,1 km
Spermophilus major
min 2 km
4,4 km, min 3,2 km
Dependence of the density of breeding sites on the distribution of the main food resource • А. Density of nesting sites
• В. Spermophilus major in food remains of eagles
High numbers in the southeast of Tatarstan are also associated with supplementary feeding
• The territory of distribution of Marmota bobak
The territory with the highest density of nesting and at the same time the greatest adaptation to anthropogenic conditions
nest
nest
nest
Species of nesting trees (n=152) 10
5
3
2 1
Pine (Pinus sylvestris) Birch (Betula sp.)
12 70
Linden (Tilia cordata) Poplar (Populus nigra) Alder (Alnus glutinosa) Elm (Ulmus laevis)
45
Oak (Quercus robur) Spruce (Picea abies)
Nestlings 2 – 4 july 2014
Normal Foto 3.07.2014 (5-7 days) Сроки кладки: конец мая
9.07.2014
6.07.2014
12.07.2014
9.07.2013
8.07.2013
22.07.2016
23.07.2016 (65-70 days)
23.07.2018
22.07.2016
Результаты успеха размножения Aquila heliaca в Татарстане Year
Numbe r of checke d nests
Numbe r of active nesting sites 29
Numbe r of success ful nests 26
% of successful nests
70,3
89
89
2012
37
Numbe r of busy nesting sites 29
2013
56
55
54
29
51,8
52,7
53,7
2014
79
68
60
50
63,3
73,5
83,3
2015
88
74
55
53
60,2
71,6
96,4
2016
70
59
48
37
52,9
62,7
77
2017
100
84
66
56
56
66,7
84,8
2018
102
72
59
51
50
70,8
86,4
% from % from % from all busy active
1,4 m
2m
2012 2018
Distance nests change (between old and new nests) 4000 3500 3000 2500 2000 1500 1000 500 0 1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
n
• n=39 • min – 10 m • max – 3600 m
30 25 20 15 n 10 5 0 0 - 500 m
501 1000 m
1001 1500 m
1501 4000 m
37
39
n=2
18.07.2014
2016
Cessation of reproduction
The death of eggs
?????
Cessation of reproduction as a result of anthropogenic influence
Year
Average number nestlings in nests older than 30 days M±SD
Number of nests with three nestlings
The proportion of nests with three nestlings from successful nests
2012
1.77±0.59
2
7.69% (n=26)
2013
1.72±0.66
3
10.34% (n=29)
2014
1.75±0.65
7
14% (n=50)
2015
1.78±0.67
6
11.32% (n=53)
2016
1.62±0.56
1
2.7% (n=37)
2017
1.45±0.5
-
-
2018
1.5±0.58
2
3.92% (n=51)
Foto Mr Ashutosh Pai
• 365 birds were ringed • 16 returns rings
Sizes of eggs, mm (n=22) 72,6
56,2
74,2
56,6
70,6
57,0
72,4
57,0
70,5
57,5
75,0
55,0
74,0
55,0
72,5
56,0
74,1
57,3
74,0
57,1
73,5
56,4
78,2
59,5
76,9
57,5
69,9
55,2
75,8
56,4
68,6
55,2
73,1
57,9
71,3
57,0
75,0
58,0
76,4
60,0
78,4
57,7
67,7
56,2
In the diet there are 23 species of birds and 9 mammals
Mammals in the diet of the Imperial Eagle Большой суслик
Spermophilus major
Обыкновенный сурок
Marmota bobak
Обыкновенный еж
Erinaceus europaeus
Заяц-русак
Lepus europaeus
Обыкновенная полевка Серая крыса
Microtus arvalis
Лисица
Vulpes vulpes
Хорь
Mustela sp.
Домашняя кошка
Félis silvéstris cátus
Rattus norvegicus
Erinaceus europaeus Hedgehog (обыкновенный ёж)
Corvidae in the diet of the Aquila heliaca Rook (грач) Magpie (сорока) Raven (ворон) Jackdaw (галка) Hooded crow (серая ворона) Jay (сойка)
Corvus frugilegus Pica pica Corvus corax Corvus monedula Corvus cornix Garrulus glandarius
Raptors in the diet of the Aquila heliaca Circus pygargus Buteo buteo Pernis apivorus Milvus migrans Falco tinnunculus
Asio flammeus in the diet of the Aquila heliaca
Grey heron (Ardea cinerea) and Domestic bird in the diet of the Aquila heliaca
Thanks! For assistance in conducting research Томаевой И.Ф., Костину Е.С., Бекмансуровой Н.В., Бекмансурову И.Р., Рахматуллину Р.Ф., Кутушеву Р.А., Лебедеву Ю.,Жукову Д.В., Галееву А.Ш., сотрудникам Волжско-Камского заповедника.