John K.B. Ford from the Pacific Biological Station, operated by the Canada Department of Fisheries and Oceans states that there is possibly a separate species of Killer Whale, distinct from the resident pods that feed on fish.
Mr. Ford is basing the claim on evidence gathered over the years since the hypothesis was put forward by Michael Andrew Bigg, after whom they wish to name the new species.
The Bigg's Killer Whale, as many scientific papers are beginning to refer to them as, first appeared to be merely "outcasts & transients" from the resident pods. They also seemed to prefer eating harbor seals and sea lions, as well as the occasional grey whale.
Over time it also became evident that these transients do not interbreed with resident populations. The next step is genetic testing of the samples gathered to determine how close the variatiants really are.
To read more about Ford, Biggs, and the research, read the original AP article.
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