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

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!