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Table 1 Phenology of non-breeding season phases for laysan ( n = 20, or if *, n = 18) and black-footed ( n = 15) albatross from Midway Atoll (mean ± SD), 2008-2012

From: Daily activity budgets reveal a quasi-flightless stage during non-breeding in Hawaiian albatrosses

  Laysan albatross Black-footed albatross
Colony departure 29-Jun ±16 days 25-Jun ±14 days
Duration of outbound transit 10 ± 6 days 12 ± 8 days
Overwinter arrival 10-Jul ±16 days 02-Jul ±11 days
Duration of overwinter 125 ± 18 days* 126 ± 21 days
Overwinter departure 12-Nov ±5 days* 05-Nov ±8 days
Duration of inbound transit 9 ± 4 days* 10 ± 8 days
Colony return 18-Nov ±13 days 16-Nov ±14 days