Nostrils united exteriorly above culmen.
139. Fulmarus (Fulmar). Bill not so long as head; upper mandible of four portions divided by indentations, the whole large, strong, curving suddenly to point; under mandible grooved along sides, bent at end; edges of mandibles sharp; nostrils prominent, united, enclosed, somewhat hidden in tube with single external orifice; wings rather long, first quill longest; tarsi compressed, feet moderate.
140. Puffinus (Shearwaters). Bill rather longer than head, slender; mandibles compressed, decurved; nasal tube low, both nostrils visible from above, directed forwards and slightly upwards; wings long, pointed, first quill slightly the longest; tail graduated; tarsi compressed laterally.
141. Procellaria (Storm and Fork-tailed Petrels). Bill small, robust, much shorter than head, straight to nail, which is decurved; wings long, narrow, second quill longest, slightly exceeding third, first shorter than fourth; tail moderate, slightly rounded; legs moderate, claws rather short.
ORDER PASSERES
FAMILY TURDIDÆ
Sub-Family TURDINÆ