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Fig. 3 | BMC Evolutionary Biology

Fig. 3

From: Mixed messages: wild female bonobos show high variability in the timing of ovulation in relation to sexual swelling patterns

Fig. 3

Profiles of urinary oestrone (open circles) and pregnanediol (closed circles) in relation to changes in sexual swelling size (open bars) in two individual cycles of two female bonobos: (a) a presumably ovulatory cycle from Susi; and (b) an anovulatory swelling cycle from Zoe. The day relative to the first day of the MSP (day 0) is indicated on the x-axis

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