Chapter XVIII.

1. There are two kinds of cottyphus. The one is black, and is found everywhere; the other is white. In size they are alike, and their voice is very similar. The white one is found in Cyllene, in Arcadia, and nowhere else. The læus is similar to the black cottyphus, but is rather smaller. It makes its house upon rocks and tiles. It has not a dark beak, like the blackbird.

2. Of thrushes there are three forms. The one is called misselthrush, for it lives upon nothing but miseltoe and resin. It is as large as the citta; the other is called fieldfare. The voice of this bird is shrill; its size is that of the blackbird. There is another kind, which some persons call illas, which is smaller than the others and less variegated.

3. There is a certain bird living on rocks, which is called blue thrush. This bird generally inhabits Scyrus. It lives upon the wing. It is less than the blackbird, but larger than the finch. Its feet are black, and it climbs up upon rocks. It is entirely blue. It has a smooth, long beak, but its legs are short, and resemble those of the woodpecker.