The western spinebill (Acanthorhynchus superciliosus) is a honeyeater found in the heath and woodland of south-western Australia.

It has a black head, gray back and wings, with a red band behind its neck and from its throat to its breast.

It tends to obtain its nectar from lower shrubs than most other honeyeaters, including Banksia, Dryandra, Grevillea, Adenanthos, and Verticordia.

With their long curved bills, western spinebills are the only honeyeaters able to gain nectar out of the tube-like flowers.

[3] It breeds from September to January, in a nest made from bark, plant stems, down and spider web.

[4] Scientists believe the two sister species are descended from a shared ancestor whose once widespread populations were separated by climate change.

[5] Recent DNA studies have shown that the two spinebills belong to a clade which is a sister taxon to all other honeyeaters.

[8] Early settler George Fletcher Moore reported that the Noongar, southwestern Australia's indigenous people, called this species "buljit".

[19] The western spinebill has been observed foraging at flower spikes lower down in the tree canopy, possibly to avoid larger and more aggressive honeyeaters.

[18] The western spinebill breeds primarily from September to January,[10] though eggs have been noted as early as August, and fledglings as late as March.