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Storm petrels part two

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8 minutes ago, IKLland said:

They might not all be the same bird. What makes you say the second photo is a least vs black? Thanks! 

Overall thick-based wings, wedge-shaped tail (Often folded, as in this bird), and especially small size compared to nearby Black SP. For future reference, flight style and molt sequence (although the latter is not as important in North American species) is a good way to identify Storm-Petrels. 

Here is an article I've found helpful: http://www.oregonpelagictours.com/2015/11/west-coast-storm-petrel-flight-style.html

Edited by Bird-Boys
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