Laurent Geslin / Southern plains grey / Hanuman langur {Semnopithecus dussumieri} two adults with young, one jumping, Sariska NP, Rajasthan, India

Fabrice Cahez / Great crested grebe (Podiceps cristatus) pair displaying, Vosges, France, March

Roger Powell / Ruff (Philomachus pugnax) male showing off his ruff in a courtship display behaviour. Varanger, Norway, June.