Comparison of Δ (delta) egg temperatures among Cassin's auklets, western gulls, and Laysan albatrosses during the day and night.

<p>Delta temperatures represent the difference between the maximum and minimum egg temperature of each day and subsequent night cycle. Shown are the mean ± SE for each species where N = 19, 11, and 14 individual deployments of each species (respectively) during the day and N = 19, 15, and 16 individual deployments of each species (respectively) during the night. Statistical differences (<i>P</i><0.05) were designated by symbols a & b. During the day, Δ temperatures of albatrosses were significantly lower than auklets and gulls (a) whereas during the night, both gulls and albatrosses had significantly lower Δ temperatures than auklets (b). See <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0097898#pone-0097898-t003" target="_blank">Table 3</a> for specific temperatures and <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0097898#pone-0097898-g006" target="_blank">Figure 6</a> for temperature cycling.