In August 2018 HBW.com updated their content, one of them is the Black-winged Myna (Acridotheres melanopterus).
Splitted into three species such as the earlier nominate race, Grey-backed Myna (A. tricolor), and Grey-rumped Myna (A. tertius).
Three of them placed as Critically Endangered by IUCN-redlist, the most problems of declining population is massive hunting and poaching in their wild habitat.
We have good news of Grey-backed Myna this month by encountering their successful breeding in one of the remaining safe areas.
For two days at the end of the rainy season, we get good and clear weather.
This endemic to the eastern part of Java island is known to be nested in February and June in east Java island and there is no more information about the breeding period (hbw.com).
The birds that we encountered used a hole in a dead palm tree, around Baluran NP, East Java on March 15-16, 2019. Height of the nest is about 10 meters away from ground level.
The nest hole is not circular, instead it tends to be rectangular with dimensions of around 8 x 17 cm. Inside the nest hole we saw 2 young birds, those who are ready to fledgling can be seen from their complete feathers.
We observed quite far from the nest.
Adults are always close to the nest and look for meals for their chicks no more than a 500-meter radius from the nest.
We saw one of the adults pick small insects like a cricket on the ground around the palm trees.
On the last day, the chicks actively looking out around the nest. Respond to the call of their parents.
According to our predictions, the chicks will leave the nest for the next 3-4 days.
Hopefully, there will be no disruption until they learn to fly and then live independently and the population in nature will continue to increase.