Data from: Study "Long-tailed Jaeger - GLS - Canadian Arctic"

Seyer Y, Gauthier G, Lecomte N. 2022. Data from: Study "Long-tailed Jaeger - GLS - Canadian Arctic". Movebank Data Repository.
Long-distance migratory seabirds need to adjust their migration strategy according to internal (breeding, molting) and external factors (seasonality, resource availability). Time-minimizing strategies are common during spring migration to arrive at the optimal time to breed. We studied the annual movements and migration strategy of the long-tailed jaeger Stercorarius longicaudus, a small arctic-nesting seabird. First, we documented year-round movements (routes, wintering sites) of male and female jaegers breeding in the Canadian Arctic. We then compared their migration strategies between seasons (phenology, stopover use, travel distance, speed) to determine whether they adopt a time-minimizing strategy in spring. Over 6 yr, we collected 43 tracks from geolocators deployed on Bylot and Igloolik Islands. Jaegers departed the breeding site over a 5 wk period and traveled on average 32375 km (round trip) before returning to breed, one of the longest documented migrations on Earth. Birds used a major stopover area east of the Grand Banks of Newfoundland in spring and fall, and wintered in high marine productivity areas of the South Atlantic. Unexpectedly, the spring migration was 40% longer and 32% slower than in fall, and birds increased their time spent on water (foraging and/or resting) by 61%. A time-minimizing strategy in fall may help to reach the wintering site rapidly and start molting early. In spring, a fly-and-forage strategy seems to be adopted to increase foraging effort, probably for the accumulation of body reserves before breeding and in anticipation of unfavorable conditions that may prevail at arrival on their arctic breeding site.
Stercorarius longicaudus,animal tracking,avian migration,geolocator,light-level logger,long-tailed jaeger,seabirds,Stercorarius longicaudus
Stercorarius longicaudus
Long-tailed Jaeger, Long-tailed Skua
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DOIs of related Publications
  title = {Data from: Study "Long-tailed Jaeger - GLS - Canadian Arctic"},
  author = {Seyer, Y and Gauthier, G and Lecomte, N},
  year = {2022},
  URL = {},
  doi = {doi:10.5441/001/1.558kn337},
  publisher = {Movebank data repository}
ID  - doi:10.5441/001/1.558kn337
T1  - Data from: Study "Long-tailed Jaeger - GLS - Canadian Arctic"
AU  - Seyer, Yannick
AU  - Gauthier, Gilles
AU  - Lecomte, Nicolas
Y1  - 2022/04/01
KW  - Stercorarius longicaudus
KW  - animal movement
KW  - animal tracking
KW  - avian migration
KW  - geolocator
KW  - light-level logger
KW  - long-tailed jaeger
KW  - seabirds
KW  - Stercorarius longicaudus
KW  - Stercorarius longicaudus
PB  - Movebank data repository
UR  -
DO  - doi:10.5441/001/1.558kn337
ER  -