Movements of long-legged buzzards and short-toed eagles

No Thumbnail Available
Date
2016-10-18
DOI
https://doi.org/10.5441/001/1.c6q8353q/1
Authors
Citation
Friedemann G, Leshem Y, Izhaki I. 2016. Movements of long-legged buzzards and short-toed eagles. Movebank Data Repository. https://doi.org/10.5441/001/1.c6q8353q/1
Abstract
Ecologically-similar species were found to develop specific strategies to partition their resources, leading to niche differentiation and divergence, in order to avoid interspecific competition. Our study determines multi-dimensional differentiation of two sympatric top-predators, long-legged buzzards (LLB) and short-toed eagles (STE), which recently became sympatric during their breeding season in the Judean Foothills, Israel. By combining information from comprehensive diet and movement analyses we found four dimensions of differentiation: (1) Geographic foraging area: LLB tended to forage relatively close to their nests (2.35 ± 0.62 km), while STE forage far from their nest (13.03 ± 2.20 km); (2) Foraging-habitat type: LLBs forage at low natural vegetation, avoiding cultivated fields, whereas STEs forage in cultivated fields, avoiding low natural vegetation; (3) Diurnal dynamics of foraging: LLBs are uniformly active during daytime, whereas STEs activity peaks in the early afternoon; and (4) Food-niche: while both species largely rely on reptiles (47.8% and 76.3% for LLB and STE, respectively), LLB had a more diverse diet and consumed significantly higher percentages of lizards, while STE consumed significantly higher percentages of snakes. Our results suggest that this multidimensional differentiation allows the spatial coexistence of these two dense populations in the study area.
Keywords
Buteo rufinus,Circaetus gallicus,diel,ecological release,flight corridors,food niche differentiation,foraging area,GPS tags,habitat differentiation,interspecific competition,long-legged buzzard,remote sensing,short-toed eagle,spatial segregation
Taxa
Sensors
Related Workflows
DOIs of related Publications
URI
https://datarepository.movebank.org/handle/10255/move.484
BibTex
@misc{001/1_c6q8353q/1,
  title = {Movements of long-legged buzzards and short-toed eagles},
  author = {Friedemann, G and Leshem, Y and Izhaki, I},
  year = {2016},
  URL = {http://dx.doi.org/10.5441/001/1.c6q8353q/1},
  doi = {doi:10.5441/001/1.c6q8353q/1},
  publisher = {Movebank data repository}
}
RIS
TY  - DATA
ID  - doi:10.5441/001/1.c6q8353q/1
T1  - Movements of long-legged buzzards and short-toed eagles
AU  - Friedemann, Guilad
AU  - Leshem, Yossi
AU  - Izhaki, Ido
Y1  - 2016/10/18
KW  - Buteo rufinus
KW  - Circaetus gallicus
KW  - diel
KW  - ecological release
KW  - flight corridors
KW  - food niche differentiation
KW  - foraging area
KW  - GPS tags
KW  - habitat differentiation
KW  - interspecific competition
KW  - long-legged buzzard
KW  - remote sensing
KW  - short-toed eagle
KW  - spatial segregation
KW  - Buteo rufinus
KW  - Circaetus gallicus
PB  - Movebank data repository
UR  - http://dx.doi.org/10.5441/001/1.c6q8353q/1
DO  - doi:10.5441/001/1.c6q8353q/1
ER  -
Collections