Dispersal movements of immature eastern imperial eagles in Hungary between 2011 and 2013

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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


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