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Table 2 Egg cooling and re-warming parameters (mean ± SD) of snow petrels incubating artificial eggs containing data loggers during the austral summer of 2013–2014 at Dumont d’Urville Station, Antarctica

From: Comparative egg attendance patterns of incubating polar petrels

Egg condition

N

Elapsed time (min)

ΔT (°C)

Rate of ΔT (°C min−1)

Cooling

9

90.9 ± 29.3

− 23.0 ± 4.3

− 0.27 ± 0.08

(min, max)

(67.1, 146.3)

(− 12.8, − 26.6)

(− 0.18, − 0.40)

Re-warming

8

75.8 ± 32.1

23.7 ± 6.4

0.33 ± 0.10

(min, max)

(43.7, 148.7)

(12.2, 32.3)

(0.19, 0.45)

  1. N is the number of egg cooling or re-warming events recorded from seven petrel nests. Elapsed time represents the duration of egg cooling or re-warming based on measured temperature changes to a steady state. ΔT represents the total change in temperature of the egg and rate of ΔT is provided for simple comparison between conditions. However, eggs cooled and re-warmed in a curvilinear manner (see Fig. 3)
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Animal Biotelemetry

ISSN: 2050-3385