Starlings and Mynas

Asian Glossy Starling

A juvenile perched on a lightning rod.



Javan Myna (or Myna Jawa)

This myna is native to Java and Bali, where on a 7-point scale from extinct to least concern, it is listed as vulnerable.  Some authorities consider it simply to be a subspecies of the great myna (Acridotheres grandis) or the jungle myna (A. fuscus), but most consider it to be a full species.

This myna has been introduced to cities and farmland in Malaysia, Thailand, Singapore, Sumatra, the Lesser Sundas, Taiwan, Puerto Rico, Japan and Nepal. In its new home(s) it often outcompetes the native Common Mynas. Confusingly, on a worldwide basis, the Common Myna is itself an invasive species- labeled 'a serious pest' in Australia.  Should we cheer on the Javan Myna for successfully spreading beyond its threatened status in its native land? Or should we be angry that it has displaced native birds in these new territories? My own view is that, unless we all move to Mars, there is no native habitat anywhere anymore and exotic species should be accommodated.

In a natural environment, mynas would eat seeds, fruit, nectar, and insects.  However, as Javan Mynas are generally unafraid of people they have adapted well to city life. Here they also eat scraps of food that we throw out.  They also owe some of their success in the city to their habit of being vigilant whilst foraging.  In a group of birds it is said one will keep watch while the others eat.  If the watch-keeper sees a threat it sounds the alarm and the entire flock flies away.

Javan Mynas are pugnacious birds.  Those that challenge the pecking order or break the rules are collectively punished.

 


Common Myna


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