Satellite tracking of Common murres (Uria aalge) in the northern California Current System, 2015-2017

Common murres are an abundant marine predator in the California Current System yet knowledge gaps exist in colony-associated movements, habitat-use of non-breeding individuals, and post-breeding season movements. We captured 24 common murres at sea, immediately adjacent to Yaquina Head, the largest murre colony in Oregon, USA. Murres were captured in May of 2015-2017 and in August of 2016 and 2017. Murres were fitted with 17 g battery-powered Platform Terminal Transmitters (PTTs; Telonics Inc.) in 2015 and 5 g solar-rechargeable PTTs (Microwave Telemetry Inc.) in the latter years. The data files show raw Argos tracking data with a low-pass filter applied as well as improved processed locations derived from fitting a state-space model. In addition, we present dive data collected and processed (number of dives and mean dive durations per hour) during 2015 only. We assessed the first and last 3 days of tracks (both in daily distance traveled and number of dives) for anomalous activity, and if present, excluded these portions of each track from the dataset. The deployment data file contains morphological information of tagged birds.