Present species hybridizes rarely with G. propinqua on Genovesa; on Santa Cruz, large-scale hybridization with G. fortis thought to have occurred. Race darwini, commonly placed in G. conirostris (often also including G. propinqua), not sampled in recent molecular analyses, but on geographical grounds and given its slightly larger bill than G. conirostris it is here assigned to present species#R; alternatively it may represent a population of hybrid magnirostris × conirostris#R. Two subspecies recognized.
Food and feeding
Status and conservation
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