Seasonal and age-related variation in daily travel distances of California Condors

Journal of Raptor Research
By: , and 



Despite a dramatic recovery from the brink of extinction, California Condors (Gymnogyps californianus) still face significant anthropogenic threats. Although condor movement patterns across large temporal scales are understood, less is known about their movements on a fine temporal scale. We used a trajectory-based analysis of GPS telemetry data gathered from condors during 2013 to 2018 to investigate the relationship between the distances condors travel in a day, demographic characteristics (e.g., age and sex), and time of year. Most (>71.4%) daily travel distances by condors were <100 km, and, on average, condors traveled 70.1 ± 60.9 km/d ( ± SD). On two occasions one condor traveled >400 km in a single day (477 km one day and 415 km the following day). The tendency for condors to travel long distances increased with age, and condors traveled longer distances during the summer and when nesting. Traveling such long distances likely exposes birds to threats across a greater variety of landscapes than would be expected for birds that moved shorter distances. Given anticipated condor range expansion and population increase, this work highlights the importance of coordinating condor conservation across the broad spatial scales at which they move.

Study Area

Publication type Article
Publication Subtype Journal Article
Title Seasonal and age-related variation in daily travel distances of California Condors
Series title Journal of Raptor Research
DOI 10.3356/JRR-20-100
Volume 55
Issue 3
Year Published 2021
Language English
Publisher Raptor Research Foundation
Contributing office(s) Forest and Rangeland Ecosystem Science Center
Description 11 p.
First page 388
Last page 398
Country United States
State California
County Ventura County
Other Geospatial Hopper Mountain National Wildlife Refuge
Google Analytic Metrics Metrics page
Additional publication details