It is journal policy for The Auk: Ornithological Advances to use the Checklist of North American Birds for English-language bird names. Accordingly, Podiceps nigricollis californicus refers to the Eared Grebe throughout the article published on July 22, 2015, in The Auk 132(4):771–786, doi 10.1642/AUK-14-259.1.
It is journal policy for The Auk: Ornithological Advances to use the Checklist of North American Birds for English-language avian names. Therefore, in the 2015 paper by Ogawa et al., “Opposing demographic histories reveal rapid evolution in grebes (Aves: Podicipedidae),” Podiceps nigricollis californicus refers to the Eared Grebe. The paper was published in The Auk 132(4):771–786, doi 10.1642/AUK-14-259.1.