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n.1.(Zool.) Any species of Australian birds of the genus Acanthorhynchus. They are related to the honey eaters.
References in periodicals archive ?
In the shrub that screens the large west window an eastern spinebill goes busily about its important work.
If you look at, for example, the length of the tube of the blossoms of correas or kangaroo paws in Western Australia, that curve matches exactly the length and curve of the bills of western spinebills.