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Table 3 Summaries of chick-rearing Adélie penguin activity at Béchervaise Island (n = 23 individuals, n = 27 foraging trips)

From: Horizontal-vertical movement relationships: Adélie penguins forage continuously throughout provisioning trips

Number of birds = 23 Guard Crèche
(n = 14 trips) (n = 13 trips)
Trip characteristics Mean (CI) Range Mean (CI) Range
Foraging trip
Duration (h) 98 (62–125) 77–181 114 (57–162) 73–208
Maximum distance from colony (km) 222 (178–249) 199–306 242 (178–283) 203–329
Move persistence
\({\gamma }_{t}\) 0.89 (0.66–1.00) 0.62–0.99 0.91 (0.71–1.00) 0.32–0.99
Dive data
Depth (m) 265 (30–796) 5–1575 299 (40–836) 5–1879
Bottom duration (s) 506 (99–1164) 19–2259 559 (103–1327) 19–2247
# Wiggles 61 (9–160) 5–568 96 (16–241) 5–628
ACPUE 0.12 (0.03–0.25) 0.07–0.47 0.17 (0.08–0.26) 0.09–0.64
  1. Values represent the geometric mean (95% confidence interval) and range for guard and crèche. Maximum distance from colony (great circle distance) is calculated using the maximum distance travelled for each individual foraging trip. Move persistence and dive data values are calculated across each hour of the foraging trip. See Methods for definitions of move persistence \({(\gamma }_{t})\) and dive metrics