Protecting threatened Over-seas biodiversity

Madagascar pond herons back in their mangroves!

In late November 2019, GEPOMAY made their third ULM flight in the 2019-2020 season in order to complete the identification of heronry and characterize their movements. A third flight made it possible to determine the presence of the species in the mangroves where the species was present last year.

Madagascar pond heron © Côme BERINCHY/GEPOMAY

A third ULM flight

For the 2019-2020 season, a first ULM flight was made in August and confirmed the establishment of heronry on three breeding sites among the five known. At first sight, only cattle egrets were installed. In October, the second flight confirmed the start of the breeding season for the species in Mayotte. The species started breeding in the mangroves of Chiconi-Mangajou and Ironi Bé but had not been observed in the mangroves of Dzoumogné, Ambato and Malamani at the time, when the species was breeding there last year. Several causes were suspected, including the disturbance caused by the presence of noise.

Thanks to this third flight, GEPOMAY confirms the presence of the species in the mangroves of Dzoumogné and Malamani. Each of the colonies remained in its original mangrove, but moved compared to previous years. The reasons for such a move are still unknown but may be human disturbances. Only the mangrove of the Ambato lagoon does not currently have Madagascar pond herons, but it should be noted that they were observed late last season.