Short-tailed Albatross (1 Viewer)

[pbjosh]

Sounds very weird, because the species was reduced to literally handful of individuals because of hunting.

I also guess that 'assortative pairing' may be an artifact of immigrating birds being younger, or one island being less suitable habitat, to which lower-quality birds are permanently pushed out.

I believe that the Senkaku birds were "rediscovered" after the Torishima birds, and had also survived, undetected, as a distinct population. Agree with the rest of your comment though.