[Pétrel de Gould] W 70cm. Note small size, black cap, narrow underwing markings and dark M across wings.
Offshore and open seas.
Very high, sharp, nasal shrieks tfeet-tfeet—.
A.Sa 2. Fi, Co. R (see also 11.4).
9.4 BLACK-WINGED PETREL Pterodroma nigripennis [Pétrel à ailes noires] W 67cm. From 9.3 by paler cap and darker, broader underwing markings. Offshore and open seas. Digs nest burrows under scrub and tussocks or breeds in rock crevices.
High, hollow, mourning twoot notes in series of 3–20. Also high, nasal and falsetto shrieks.
Breeds NZ 4,10,11,
FrPo 30.
9.5 PROVIDENCE PETREL Pterodroma solandri [Pétrel de Solander] W 100cm. Head contrastingly darker. Note white markings at bill base and pale base of primaries on underwings. Very similar to 9.6, 10.4 (dark morph), 11.2 and 11.3, which see.
Offshore and open seas. Nests in burrows or rock crevices, often within forest. Breeds also on sparsely vegetated cliffs.
High, upslurred eeuuh-eeuuh—.
Disperses N after breeding Lord Howe I. R
9.6 GREAT-WINGED PETREL15 Pterodroma macroptera [Pétrel noir] W 99cm. Nom. (a, with little white at bill base) shown and ssp gouldi (b, NZGrey-faced Petrel, with more white in face). From 9.5 by more uniform plumage and little or no pale flash on outer underwings.
Offshore and open ocean. Nests in burrows or crevices under clumps of vegetation.
Breeds islands and mainland N NZ 1.
9.7 SOFT-PLUMAGED PETREL Pterodroma mollis [Pétrel soyeux] W 89cm. Polymorph, pale (a) and rare dark (b) morphs shown. Note that collar is closed across breast and that more or less distinct pattern of underwings (often appearing uniform dark) resembles pattern of upperwings.
Offshore and open ocean. Breeds in burrows under dense cover.
Very high, drawn-out, wailing shrieks.
Breeds NZ 8.
9.8 WHITE-HEADED PETREL Pterodroma lessonii [Pétrel de Lesson] W 109cm. Note white head and pale grey rump and tail, contrasting with darker wings and mantle.
Offshore and open ocean. Breeds in burrows under tussocks, ferns, low shrub, often in open grassland.
Low croaks and series sounding as if produced by a dry bicycle pump.
Breeds NZ 6,8.
9.9 MAGENTA (or NZChatham I. Taiko) PETREL Pterodroma magentae [Pétrel de Magenta] W 102cm. From 9.1 by different underwing pattern, from 10.3 mainly by range.
Offshore. Breeds in dense forest.
Breeds NZ 4. R
10 Petrels
10.1 CHATHAM PETREL Pterodroma axillaris [Pétrel des Chatham] W 67cm. Diagnostic underwing pattern, in which carpal joint is connected by bar to rear edge where touching body.
Offshore and open ocean. Breeds in burrows in soft clay under vegetation clumps and tussocks.
Very high, rapid, staccato tseetseetsee in flight.
Breeds NZ 4. R
10.2 MOTTLED PETREL Pterodroma inexpectata [Pétrel maculé] W 85cm. Underparts with diagnostic broad bar across underwings and brownish belly.
Nests in burrows in rocky ground and tussock grassland.
High, thin shrieks in short, slightly lowered series.
Breeds NZ 3,5. R
10.3 PHOENIX PETREL Pterodroma alba [Pétrel à poitrine blanche] W 83cm. Very similar to 9.1, 9.9 and 11.3, but underwings solid brown except narrow white line along leading edge.
Offshore and open ocean. Breeds not in burrows, but on the ground at sheltered sites under trees or bushes.
High, sharp bickering, down-slurred at the end.
Breeds Ki, FrPo 3, Pi. R
10.4 KERMADEC PETREL Pterodroma neglecta [Pétrel des Kermadec] W 92cm. Polymorph, dark (a) morph and pale (b) morphs shown; most common is intermediate morph (not shown). All morphs generally difficult to separate from
[Pétrel de Gould] W 70cm. Note small size, black cap, narrow underwing markings and dark M across wings. 
