Leachs Storm-Petrel (Oceanodroma leucorhoa) Science Article 2
We assessed geographic variation in 13 locality samples of Leach’s Storm-Petrel (Oceanodroma leucorhoa), 12 from the Pacific coast and I from the Atlantic coast ofNorth America. Nine phenetic characters were used with canonical variates analysis to determine similarity among samples. Regression of phenetic distance on geographic distancemeasured the relation between similarity and interisland distance. We found a clinal pattern of population similarity from the Aleutian Islands in the north to the Farallon Islands in the south.
DENNIS M. POWER, DAVID G. AINLEY, The Auk 103: 575-585