It would be tempting to call this bird a juvenile because of the neat and perfect plumage. However, the species lays eggs in December and the young don't leave the nest until April-May. Therefore it has to be an adult in perfectly fresh plumage. See the other photos from this day, notice than none of these birds show a similarly perfect plumage. A bit strange...
Slight wedge-shaped tail, here where it is held close together. But no doubt about the species, since the necessary field marks are present. And it was the only shearwater species we saw this day.
Light morph with a Sooty Shearwater in the background. The Sooty looks somewhat compact for a Sooty, but the bill, which looks uni-colored, and the longish tail exclude both Wedge-tailed and Pink-footed, dark morph. Both of which would also be rare observations.
That this bird is a pink-footed I have no reason to doubt, but try to compare it with 2591 photo 5 and see how much it resembles the bird I there call a Wedge-tailed. Hopefully it only shows how similarly they can look, and not that I made a mistake about the Mexican bird...
Strong bill with pinkish base and dark tip, and thicker head and diffuse transition from bright front of the neck to the grayish rear part separates this bird from the more common species in these waters, Wedge-tailed Shearwater. The underwing is of Pink-headed is always variable.
Same comment to identification as with 2587. Further more you can here see that the tail is shorter than the wings, which is the opposite with the Wedge-tailed, except during molt.
Here again with several Wedge-tailed. The bird to the right on photo 1,5 and 6 looks rather big for a Wedge-tailed,but I think it's an illusion. In photo 3 there is a dark morph shearwater in the background. It is most likely a Wedge-tailed since the dark morph Pink-footed is very rare. However, the proportions of the bird seem to fit the latter better than the former. Flesh-footed would be a real hit this far south on the Pacific coast.