Dispersal movements of immature eastern imperial eagles in Hungary between 2011 and 2013
Márton Horváth, Mátyás Prommer, István Lotár Molnár, Imre Fatér & Tibor Juhász 7th International Conference on the Conservation of the Eastern Imperial Eagle, 3 October 2013, Bratislava, Slovakia
Aims of tracking • Conservation: Decrease mortality – – – –
Locate problems (poisoning cases) Locate possible conflict areas Frighten the possible perpetrators Public Relations: individualization
• Conservation biology: Dispersal and habitat use – Natal dispersal: from fledging to first breeding – Breeding dispersal: between breeding attempts – Habitat selection of non-breeders: temporary settlement areas – Habitat selection of breeders: territory use
Methods • • • •
EAZA Carnivore campaign (2011: 4) HELICON LIFE+ (2012-2014: 30) 26 (+1) birds tagged already GPS-Argos transmitters (Microwave) – 2011: 3 juv + 1 imm, 2012: 9 juv (+ 2013: 1 imm) – Locations: 60-120 min, received in every 72 hours
• GPS-GSM transmitters (Ecotone) – 2013: 10 juv + 1 imm + 2 ad – Locations : 30 min, received in every 2 hours
www.satellitetracking.eu
2011: 2 dead, 1 unknown, 1 alive
Bobák (2011): poisoned
Hungary-Romania border zone: February 2012
Panni (2011): ALIVE
Szellล (2011, 2y): unknown
Nagykunsรกg (electrocution?): May 2012
Tiszavirág (2011): unknown, dead
2012: 5 dead, 3+1 alive
Ă ron(2012): hit by train ď Œ
Heves: December 2012
Dani (2012): poisoned ď Œ
Hungary-Romania border zone: May 2013
Danuta (2012): ALIVE
Évi (2012): electrocuted
Békés - Hajdú-Bihar county border: February 2012
Gabi (2012): ALIVE
Pantelleria: April-September 2013
Ghana: November 2012 – January 2013 – transmitter went wrong
Kati (2012): ALIVE
Kriszti (2012): ALIVE
Krisztián (2012): Electrocuted
Turkey-Syria border zone: November 2012
Roland (2012): poisoned
Békés - Hajdú-Bihar county border: March 2013
2013: 1 dead, 12 alive
Schenk (2013, 2y): ALIVE
Vihra (2013, 2y): poisoned, but ALIVE ď Š
Greenbalkans (2012-2013), MME-BSPB (2013-)
Rudolf(ina) (2013, ad): poisoned twice ď Œ
Rudolf(ina) (2013, ad): poisoned twice ď Œ
Tarján (2013, ad): poisoned, but ALIVE
Tarján (2013, ad): poisoned, but ALIVE
Carpathian-basin: E-W
0
50
100 km
Southeast-Hungary
0
25
50 km
Jász-Nagykun-Szolnok, Békés, Csongrád, Hajdú-Bihar
Temporary settlement areas (TSA)
0
5
10 km
Foraging habitats within TSAs
0
2,5
5 km
Roosting habitats within TSAs
0
0,5
1 km
Perching trees
0
50
100 m
TSA
Find an eagle pair!
Juveniles before dispersal: Territory structure
To be tagged in 2014
Dispersal 1.: Avoid infrastructure
Dispersal 2.: Avoid mountains
Dispersal 3.: Avoid dense breeding populations
Wintering areas of juvenile IEs 2012/2013
Territorries
Dispersal 4.: Prefer dense prey populations
Dispersal 4.: Prefer dense prey populations
Brown hare estimation
Dispersal 4.: Prefer dense prey populations
Pheasant release
Summary Survival: • 1st year: 31% (4/13) • 2nd year: 25% (1/4) Mortality causes: • Poisoning: 50% (4) • Electrocution: 25% (2) • Collission with train: 12.5% (1) • Unknown: 12.5% (1)
Fotó: Czifrák Gábor
Detailed analyses in 2014-2015
Thank you for your attention!