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The northern resident population consists of three clans (A, G, R) that consists of several pods with one or more matrilines within each pod. The northern residents are genetically distinct from the southern resident orcas and their calls are also quite distinct.
In addition to individual markings, distribution during the summer breeding season can be used to distinguish the northern or southern resident groups. This, along with charting the distribution of each group during summer and winter, is the most prominent way of recognizing both individual orcas and the group to which they belong.
A30 Tsitika [6] (1947-2012), born around 1947, Tsitika was one of the oldest killer whales in the northern resident community and one of the few orcas that was already a reproductive mother when first seen in the early 1970s. She was very recognizable due to the distinctive curve of her dorsal fin.
Orcas live in three different ecotypes, or classifications. Resident orcas stay close to the shore and feed primarily on salmon along the west coast of Canada and into the Pacific Northwest of the ...
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Tracking the Humboldt Current orcas and knowing what the killer whales are hunting and eating will help conservation groups protect the orcas, which are described as “data deficient” by the ...
A5 Pod is a name given to a group of orcas (Orcinus orca) found off the coast of British Columbia, Canada.It is part of the northern resident population of orcas—a name given to the fish-eating orcas found in coastal waters ranging from mid-Vancouver Island in British Columbia up through Haida Gwaii and into the southeastern portions of Alaska.
An orca breaching in Hood Canal. The marine mammals of the Salish Sea are numerous and diverse, both in taxonomy and morphology. A total of six species of pinnipeds, eight species of baleen whales, seventeen species of toothed whales, and one mustelid (the sea otter) inhabiting the local waters of the Salish Sea and the outer coastal waters over the continental shelf off Washington and British ...