Figure 2From: Resource partitioning between incubating and chick-rearing brown boobies and red-tailed tropicbirds on Christmas Island Mean and 95% CI of (A) δ 15 N and (B) δ 13 C values in blood during incubation and chick rearing. These were taken from red-tailed tropicbirds (RTTB) and brown boobies (BRBO) breeding on Christmas Island, Indian Ocean. The isotopic values correspond to the values for both sexes pooled.Back to article page