On 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.
Read: One-day Birding Trips in Baluran National Park
We have a good news of Grey-backed Myna this month by encounters their successful breeding in one of the remaining safe area.
For two days in the end of rainy season, we get a good and bright weather.
This endemic to eastern part of Java island known nested on February and June in east of java island and there are no more information about the breeding period (hbw.com).
The birds that we encountered use hole in dead palm tree, around Baluran NP, East Java on March 15-16, 2019. Height of 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 8x17 cm. Inside the hole nest 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 adult picked small insect 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.
Read: Easy encountered of Grey-breasted Partridge (Arborophila orientalis) in this site!
According to our predictions, the chicks will leave the nest for 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.