Table 1.

Details of tracking device deployment for collecting Herring Gull movement data used in this study

Local Breeding Population	n tags deployed	n individuals analyzed	n migrations analyzed	Deployment Location	Years of Tracking	Model	Duty Cycle	Attachment Method	Capture Method
Eastern Arctic	14	8	8	Southampton Island, NU	2008, 2013–2015	Microwave Telemetry Inc. Solar 18 g PTT-100	10 h on, 24 h off	Leg loop harness [28]	Drop Trap [30]
Newfoundland	9	9	12	Witless Bay, NL	2015–2016	Ecotone Harrier GPS-UHF 15 g	6 locations per day	Leg loop harness	Bow-net [30]
				Within 75 km of Quabbin Reservoir, MA	2009–2013	Microwave Telemetry Inc. Solar 30 g GPS-PTT, Northstar 11.5 g PTT	8 h on, 18 h off	Chest Harness [32]	Net Launcher [29]
Sable Island	8	8	17	Sable Island, NS	2012–2016	Microwave Telemetry Inc. Solar 22 g GPS-PTT	8 locations per day	Leg loop harness	Bow-net
Bay of Fundy	10	8	11	Kent Island, NB	2009–2010,	Microwave Telemetry Inc. Solar 18 g PTT-100	6 h on, 34 h off	Leg loop harness	Drop Trap
				Brier Island, NS	2014–2015	Ecotone Harier-L 13 g GPS-UHF	6 locations per day	Leg loop harness	Drop Trap