New Species of the Red Crossbill (Fringillidae: Loxia) from Idaho, A
The Red Crossbill (Loxia curvirostra complex) endemic to the South Hills and Albion Mountains in southern Idaho has coevolved in a predator-prey arms race with the lodgepole pine (Pines contorta latifolia). The resulting divergent selection has favored a sedentary, locally adapted crossbill population whose size and vocalizations differ from those of co-occurring Red Crossbills of other call types. It has also led to high levels of reproductive isolation between the "South Hills crossbill" and nomadic taxa with different vocalizations that move in and out of the area yearly. Genetic analyses of ...
(For more, see "View full record.")