Reproduction When nesting, the species lays eggs at high altitudes in mountains or forests. This explains its preference for
volcanic islands when breeding. Although the Tahiti petrel breeds all year long, a peak of egg-laying occurs between March and July with most newborns being ready to fly between July and September. In general, the loose breeding season is associated with the March to October period.
Diet The Tahiti petrel's diet is close to unknown, although some observational feeding records exist. These records describe the bird seizing prey at the surface of water instead of diving. Analysis of their gut contents has revealed the digestion of deep
pelagic fish,
cephalopods, and
benthopelagic fish like
hatchetfish (Sternoptychidae family),
snake mackerels (
Gempylus serpens), and
silver scabbardfish (
Lepidopus caudatus). Since these petrels do not dive, the presence of deep-sea fish in their stomachs indicates
scavenging behaviour on dead organisms or seizing species at night when they
migrate vertically in the
water column.
Vocalization When in flight or on its breeding ground,
P. r. rostrata uses a long series of whistles in an elaborate call ending with a hooting sound. On the other hand, while flying,
P. r. trouessarti performs up-slurred whistles and when on the ground, usually performs braying whistles composed of a hiccup, whistle, moan, pause, and harmonics. In general, many variations in call segments are observed, which may display sex, emotions, and individuality. == Conservation ==