Javan leafbird vs Sumatran leafbird

The sumatran leafbird is heavier: 32.3 g against 24.5 g for the javan leafbird, about 32% more.

What is the difference between a javan leafbird and a sumatran leafbird?

Each point below is worked out from a pair of recorded values.

The sumatran leafbird is heavier: 32.3 g against 24.5 g for the javan leafbird, about 32% more.
Both belong to the genus Chloropsis, so they are close relatives.
Both are listed as Endangered on the IUCN Red List.

	Javan leafbird	Sumatran leafbird
Scientific name	Chloropsis cochinchinensis	Chloropsis media
Family	Chloropseidae	Chloropseidae
Order	Passeriformes	Passeriformes
Weight	24.5 g	32.3 g – 40 g
Length	Not recorded	Not recorded
Lifespan	Not recorded	Not recorded
Main food	Not recorded	Not recorded
Habitat	forest	forest
Conservation status	Endangered	Endangered
Countries recorded	Not recorded	Not recorded

A scale drawing needs a recorded length for both animals; only weights are on record for this pair.