Can the western subspecies of Yellow-billed Cuckoo be saved from extinction?

The western subspecies of the Rufous Bristlebird is probably extinct.

Historically the population of the western subspecies was about 1000 individuals, declining in the early 1990s, with the current population considered stable.

Individuals belonging to western subspecies tend to be larger than those from the east and females are smaller than males.

Fox predation is a major threat to the western subspecies.

One-year old males are similar to females but blacker; the whitish wing panel of the western subspecies does not develop until the second year.

The western subspecies spawns at water temperatures of 12-24 degrees C, spawning in the afternoon.

The painted turtles in the border region between the western and midland subspecies were sometimes considered a full species, treleasei.

Also the name Echo blue is used for the C. a. echo western subspecies.

In the western subspecies, adults are also dark above, but have a grayish throat and barring mixed with rufous on the underparts.