Shearwig

Shearwigs are enemies of which only the males are seen. The females of this species are never seen, as they spend nearly their entire life underground. They also do not possess the males' wings. The males have a dark green shell, sporting simple wings and large, sickle-shaped mandibles. They are slightly more aggressive than Male Sheargrubs and take leave off the ground to hover up high after having lost at least half of their health to allow it to steadily return. While up in the air, these creatures are still within the reach of a Pikmin throw.

Like other mandiblards, Shearwigs have an affinity for chewing apart stick bridges, and they lose health while in water. Because when they are being attacked they fly up, they will stop losing health as soon as they stop being submerged. On the ground, if they are hit in the back, they will die instantly.

Some Shearwigs fly almost all the time while fighting and swoop down to grab Pikmin and eat them. Instead of healing while in flight, they roost and go underground, and can fully heal in 30 seconds. They will go underground to heal when their health reaches 20% or lower and will emerge after it reaches 50% if prey is nearby.

Olimar's notes

 * "Unusual for their genus, flying mandiblards have retained their wings. However, only the adult males of this species can fly. Females of this species spend most of their life span underground. They do emerge for a period after maturation to spawn, but they never metamorphose."

Louie's notes

 * "Grate this beast into a zest and whisk with sugar, cream, and chopped dark chocolate for a lusciously indulgent mousse that's a true culinary coup de grace!"

Pikmin TCG
Shearwigs appear in the Pikmin 1 Card Set. Their ability is the ability to heal rather than attack during a turn.

Pikspore
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In PikSpore, they are fairly common enemies. The Darkfreeze variant is the Darkfreeze Shearwig.

Tike's notes

 * "I question on how these creatures manage to hold themselves afloat when they fly. Oddly enough, it has to do with their stomachs. When it flies, it lowers its body fat. It turns that fat into energy, which helps it fly faster and it loses about a third of its weight. That's why when they fly, they are a lot more hungry. They make sure to feed after their flight, or else, it can become dangerous."

Alice's notes

 * "They are bold. They are also quite loyal. When we meet their queen, the did everything to protect her. They remind me a lot of the Pikmin. They are also less aggressive than Jackwigs. You know what, I like them. If only they didn't eat our loyal companions..."

Captain Pikmin's notes

 * "Flying is what they do best, and to stop that best, you must bring him down to the ground. To do that, a strong shot at the body should do the trick."

Pikmin Forever
In Pikmin Forever, Shearwigs are more graphically and behaviorally updated, being able to react to the environment. It will give off a dim greenish glow in dark areas. If you can strike it out of the air, the Pikmin will hold on to the Shearwig until it lands, and they do not drop pellets. If it is attacked on the ground, it can either burrow and be forced out by a Purple Pikmin's impact, or it can fly into the air and be hit by a Pikmin. Winged Pikmin will automatically attack this beast if it is in the air and the winged Pikmin collides with the Shearwig. This enemy will choose to periodically migrate to different places on the map via flying, covering large distances. They can migrate to a total of 5 places on any given map, besides small challenge mode levels, and each time it is chosen randomly. Shearwigs cannot burrow on hard materials, seeking out softer ones like sand to burrow in.