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Fertility of captive flamingos varies between flocks, species and seasons. Individuating\udinfertile eggs could be helpful to facilitate important decisions. Wild\udanimals could be encouraged to abandon the nest or not, whereas in captivity\udremoving non-viable egg would lead birds to lay a new one. The aim of this\udstudy was to investigate the parental behaviour of a pair of greater flamingos\ud(Phoenicopterus roseus ) in the presence of a fertile and an infertile egg. Data\udon the posture and behaviours of the pair on the nest were collected over two\uddifferent periods: first period—an infertile egg was laid; second period—a fertile\udegg was laid. For each period, 28 ten-minute sessions per flamingo partner\udwere run. Results revealed that female flamingo spent significantly more time\udstanding on the nest in the first than in the second period (P = 0.010). Moreover,\udwhen standing on the nest, the female performed significantly more\udegg-care behaviour (attention to the egg, egg rotation/moving) in the first\udthan in the second period (P = 0.010). No significant differences between periods\udemerged in the male flamingo posture on the nest and behaviours.\udFindings from this study suggest that female flamingos stand on the nest\udlonger if the egg is infertile, paying more attention and examining it deeply.\udThis study provides new insights into greater flamingo parent-embryo communication.\udFuture research is needed to improve our knowledge on this topic,\udas well as on the husbandry of this species in the controlled environment

Can Greater Flamingo Recognize Fertile <i>vs.</i> Infertile Egg? A Single Case Study