Spring migration routes of Long-tailed Skuas around and across the UK - results of observational and tracking data

Wynn, Russell B.; Brown, Dan; Thomas, Gavin; Holt, Chas A.; Hanssen, Sveinn Are; Moe, Børge ; Gilg, Olivier. 2014 Spring migration routes of Long-tailed Skuas around and across the UK - results of observational and tracking data. British Birds, 107 (4). 220-228.