Eastward of the range of the present species its place is taken by its congener C. caniceps, which is easily recognized by wanting the black hood and white ear-coverts of the British bird.
One Oriental species (Sciurus caniceps) presents almost the only known instance among mammals of the assumption during the breeding season of a distinctly ornamental coat, corresponding to the breeding plumage of birds.
Caniceps, but goes through no seasonal change of colour.
There are many kinds of birds, notably the megapod (Megapodius nic.), the edible-nest-building swift (Collocalia nidifica), the hackled and pied pigeons (Calaenas nic. and Carpophaga bicolor), a paroquet (Palaeornis caniceps) and an oriole (Oriolus macrourus).