Soft-plumaged Petrel
Birds nocturnal

Soft-plumaged Petrel

Pterodroma mollis

A master of the southern gales, the Soft-plumaged Petrel is a ghost of the open ocean. Known for its acrobatic flight and secret nocturnal life, this 'gadfly' petrel is a rare and rewarding sight for any coastal observer.

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Quick Identification

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Size

Length: 32-37 cm (12.5-14.5 in); Wingspan: 83-95 cm (33-37 in); Weight: 230-340 g (8-12 oz)

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Colors

Slate-grey upperparts with a dark 'M' marking; white underparts featuring a distinctive grey breast band; dark eye patch against a pale face.

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Key Features

  • Dark grey breast band (sometimes incomplete)
  • Distinctive dark patch around the eye
  • High, arcing 'gadfly' flight style
  • White underwings with dark leading edges

When You’ll See Them

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Activity pattern nocturnal
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Peak hours 10:00 PM - 3:00 AM (at breeding colonies)
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Season September-May (Southern Hemisphere breeding season)
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Diet Primarily feeds on squid, small fish, and crustaceans caught by surface-seizing or performing shallow plunges while in flight.
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Habitat Pelagic (open ocean) for most of the year; nests in burrows on steep, tussock-covered slopes of oceanic islands.

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Behavior

The Soft-plumaged Petrel is a quintessential 'gadfly' petrel, a name derived from its fast, erratic, and high-arcing flight pattern. Unlike many larger albatrosses that glide majestically, this species wheels and dives through the air with incredible agility, often using the wind reflecting off wave fronts to propel itself. While they are silent and solitary at sea, they become highly social and vocal when returning to their breeding colonies on remote subantarctic islands.

To protect themselves from predatory birds like skuas, Soft-plumaged Petrels are strictly nocturnal when visiting land. They arrive at their nesting sites under the cover of darkness, filling the air with a chorus of moans and whistles as they navigate to their underground burrows. These birds are long-lived and typically mate for life, returning to the same burrow year after year to raise a single chick.

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Camera Tips

Capturing the Soft-plumaged Petrel on camera is a unique challenge because they are almost exclusively pelagic. Unless you are stationed on a remote island like Gough, Marion, or the Antipodes, you won't find these in a traditional suburban backyard. For researchers or residents of these remote outposts, camera traps should be positioned approximately 1 to 2 feet off the ground, angled directly at the entrance of known active burrows. Because these birds are nocturnal on land, use a camera with 'No-Glow' or 'Black' infrared LEDs; standard 'Low-Glow' IR can sometimes startle them, leading to abandoned entries.

Set your camera to a high-sensitivity trigger and use 'Burst Mode' to capture 3-5 photos per trigger. These petrels are remarkably fast when landing and scuttling into their holes to avoid predation, so a fast trigger speed (0.2 seconds or less) is essential. Since they breed on steep, windy slopes, ensure your camera housing is weighted or securely strapped to a T-post or a sturdy rock to prevent 'false triggers' caused by wind-blown tussock grass. If possible, clear a small 3-foot radius of tall grass directly in front of the lens to keep the focus sharp on the bird rather than the vegetation.

Video mode is particularly effective for this species to record their unique vocalizations and social interactions. If you are using video, set the duration to 15-20 seconds with a minimal 're-arm' time. Be mindful of the salt-heavy air and extreme humidity of their island habitats; using desiccant silica gel packets inside the camera housing is a must to prevent lens fogging during the damp nocturnal hours when the birds are most active.

Frequently Asked Questions

Soft-plumaged Petrels are strictly nocturnal when they are on land at their breeding colonies to avoid predators. At sea, they can be seen foraging during daylight hours, though they are most active during the twilight periods of dawn and dusk.
Because Soft-plumaged Petrels are pelagic seabirds, they cannot be attracted to typical inland backyards. They only come to land on specific subantarctic and temperate islands to breed. If you live in a coastal area near their range, the best way to support them is by reducing light pollution, as bright lights can disorient them during their nocturnal flights.
Their diet consists mainly of cephalopods (squid), but they also consume small bioluminescent fish and various crustaceans. They are 'surface-feeders,' meaning they grab prey from the top of the water while flying or sitting on the surface.
No, they are never found in suburban areas. They spend their entire lives at sea, only visiting remote, uninhabited islands for nesting. They are occasionally spotted from coastal lookouts during heavy storms, a practice known as 'sea-watching.'
The best identifier is the dark grey breast band. While some individuals have an incomplete band, the combination of the dark 'M' wing pattern, the dark eye patch, and the lack of a white rump distinguishes them from similar species like the White-headed Petrel.

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