Table 3. Minimum and maximum day and night egg temperatures of each bird species.

Species		N	Min (°C)	N	Max (°C)	t-statistic	P
Cassin's auklets	Day	11	36.7±1.1	18	38.8±1.6	−3.8	<0.001
	Night	14	37.2±1.3	23	38.3±1.5	−2.2	0.031
Western gulls	Day	10	38.2±1.5	11	40.2±1.3	−3.3	0.004
	Night	15	38.4±1.2	15	39.8±1.4	−3.0	0.005
Laysan albatrosses	Day	15	37.2±0.9	13	38.6±1.2	−3.9	<0.001
	Night	16	37.3±0.8	16	38.8±1.0	−4.3	<0.001

Shown are the mean ± SD min and max egg temperatures for each species.