Black Vultures and Turkey Vultures Southeastern USA-reference-data

Holland AE, Michael E. B. 2017. Black Vultures and Turkey Vultures Southeastern USA-reference-data. Movebank Data Repository.
Knowledge of black vulture (Coragyps atratus) and turkey vulture (Cathartes aura) spatial ecology is surprisingly limited despite their vital ecological roles. Fine-scale assessments of space use patterns and resource selection are particularly lacking, although development of tracking technologies has allowed data collection at finer temporal and spatial resolution. Objectives of this study were to conduct the first assessment of monthly home range and core area sizes of resident black and turkey vultures with consideration to sex, as well as elucidate differences in monthly, seasonal, and annual activity patterns based on fine-scale movement data analyses. We collected 2.8-million locations for 9 black and 9 turkey vultures from June 2013 –August 2015 using solar-powered GSM/GPS transmitters. We quantified home ranges and core areas using the dynamic Brownian bridge movement model and evaluated differences as a function of species, sex, and month. Mean monthly home ranges for turkey vultures were ~50% larger than those of black vultures, although mean core area sizes did not differ between species. Turkey vulture home ranges varied little across months, with exception to a notable reduction in space-use in May, which corresponds with timing of chick-rearing activities. Black vulture home ranges and core areas as well as turkey vulture core areas were larger in breeding season months (January–April). Comparison of space use between male and female vultures was only possible for black vultures, and space use was only slightly larger for females during breeding months (February–May). Analysis of activity patterns revealed turkey vultures spend more time in flight and switch motion states (between flight and stationary) more frequently than black vultures across temporal scales. This study reveals substantive variability in space use and activity rates between sympatric black and turkey vultures, providing insights into potential behavioral mechanisms contributing to niche differentiation between these species.
animal behavior,animal movement,animal tracking,black vulture,Cathartes aura,Coragyps atratus,GSM telemetry,home range,turkey vulture
Related Workflows
  title = {Black Vultures and Turkey Vultures Southeastern USA-reference-data},
  author = {Holland, AE and Michael, E., B},
  year = {2017},
  URL = {},
  doi = {doi:10.5441/001/1.67f77j31/2},
  publisher = {Movebank data repository}
ID  - doi:10.5441/001/1.67f77j31/2
T1  - Black Vultures and Turkey Vultures Southeastern USA-reference-data
AU  - Holland, Amanda E.
AU  - Michael E., Byrne
Y1  - 2017/07/11
KW  - animal behavior
KW  - animal movement
KW  - animal tracking
KW  - black vulture
KW  - Cathartes aura
KW  - Coragyps atratus
KW  - GSM telemetry
KW  - home range
KW  - turkey vulture
KW  - Cathartes aura
KW  - Coragyps atratus
PB  - Movebank data repository
UR  -
DO  - doi:10.5441/001/1.67f77j31/2
ER  -