Monteiro.s juvenile, August, vincent

‘band-rumped storm-petrel’ off Graciosa, early August 2012 (Vincent Legrand). The fresh set of primaries and secondaries indicates this is either a juvenile Monteiro’s Storm-petrel or an early adult Grant’s Storm-petrel. Such birds cannot be identified with certainty on current knowledge, and despite perceived structural differences such as the less notched tail and sturdier overall appearance for Grant’s Storm-petrel, a bird such as this is best left unidentified.

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