Imperial Eagle in Czech Republic David Horal Agency for Nature Conservation and Landscape Protection of the Czech Republic
7th International Imperial Eagle Conference, Bratislava, Slovakia, 2-5 October 2013
year 20
20
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98
pairs
Population of IE in CZ 1998-2013
5
4
3
2
1
0
Breeding results, 1998 - 2013 37 breeding attempts, 26 successful breedings, 48 fledged young (min.: 2006, 2007 – 1; max.: 2012 – 9), 2 successfull replacements (2006, 2010)
1,30 fledged young / breeding 1,85 fledged young / successful breding
Photo: V. Gahura
Fledged young n (N = 37)
15 10 5 0 0
1
2
average 1.30
3
Soutok 2004, P. Horรกk
Breeding in CZ, 2010-2013
AQUHEL in CZ, 2010-2013, source: www.birds.cz/avif, 26.09.2013, N = 85
AQUHEL in CZ, 2010-2013, source: www.birds.cz/avif, 26.09.2013, N = 85
source: http://ndop.nature.cz
Losses (N = 12)
weather - windstorm weather - cold disturbance - forest works disturbance - anglers disturbance - tourists supposed predation
IV-V/2010, V. Škorpíková
IV/2010, Soutok
09/2011, M. Bierbaumer
age class 14 1
13 1
12 1
11 1
10 1
91
to
to
to
to
to
90
80
70
60
50
40
15 0
14 0
13 0
12 0
11 0
10 0
to
to
to
to
to
to
to
81
71
61
51
41
31
n (N = 26)
Age classes of forest stands with nests of IEs
8 6 4 2 0
Soutok, 2012, 140 years
Soutok 2010, Židlochovice 2010
Nesting tree species (N = 32) Oak - Quercus robur Poplar - Populus alba Pine - Pinus sylvestris Willow - Salix
Lednice, 2008 - 2010
Lednice 2010, Soutok 2010
Breeding territories, 1998-2013
Breeding territories, 1998-2013
Soutok – „Kessweide“ pair, 1998 – 2013, minimum convex polygon 84 ha
Soutok – „Lány“ pair, 2001 - 2004, minimum convex polygon 72 ha
Soutok – „Ledviny“ pair, 2004–2009 (-13), MCP 137 ha; AQUHEL-HALALB 585m
Soutok – „Hausbrunn“ pair, 2008 - 2013, minimum convex polygon 1222 ha
Lednice pair, 2008 - 2013, minimum convex polygon 79 ha
Trávní dvůr pair, 2010 - 2013, minimum convex polygon 8 ha
RINGING RESULTS 1998 – 2013, 42 pull. ringed (P. Horák 25, V. Gahura 1, H. Matušík 16) 39 of them fledged successfully 3 ringing recoveries – 2x Slovakia, 1x Austria
2 birds ringed abroad found in CZ, both coming from Slovakia • pull 2005 E Slovakia – 2006 Greece, 2007 CZ • ? pull 1994 E Slovakia – breeding female 2006 – 2013 Soutok, CZ LIFESPAN (HVM – Glutz et al. 1989): Aquila heliaca 21+ years – captivity (HVM – Glutz 1971); Slovakia – 10 years (Danko in Cepák et al. 2008) A. adalberti 44+, 27 – all in captivity (Glutz et al. 1989); 31 (González 2008); in wild – 18+, 19+, 21+, model 21-22 (Ferrer 2001)
Red dots – birds ringed in CZ Blue dots – birds ringed abroad
Soutok, 06/2013, photo: V. Gahura
Soutok, 06/2013, photo: V. Gahura
photo: V. Gahura
Acknowledgements: • • • • • •
† Petr Horák (1956 – 2005) V. Gahura, T. Bělka (photos) V. Škorpíková, H. Matušík (field data) V. Riedl, L. Poledník (maps) Prague Ringing Centre and J. Cepák T. Zuna-Kratky, K. Edelbacher, M. Bierbaumer (Austria) • P. Heralt, V. Beran, G. Čamlík, P. Štěpánek, P. Dedek and many other field co-workers.
photo: V. Gahura
Thank you for your attention. David Horal david.horal@seznam.cz