Western Spinebill - Its contact call is a rapid high-pitched whistle, but when feeding it has a quieter whistle.
Eastern Spinebill - The Eastern Spinebill, Acanthorhynchus tenuirostris, is a species of honeyeater found in south-eastern Australia in forest and woodland areas, as well as gardens in urban areas of Sydney and Melbourne. It is around 15 cm long, and has a distinctive black, white and chestnut plumage, a red eye, and a long downcurved bill.