Language: English with bilingual abstract in English and Spanish
Residing in waters just west of the Americas, in a roughly triangular area from about 50°N to 50°S and out along the equator, are 26 distinct taxa of storm-petrels (Hydrobatidae), a diversity far greater for this group than in any equivalent stretch of The authors here report on their research that seeks to understand how many forms can co-occur within this very poorly known family.