Marcia Bonta

  • Superflight

    It began with red-breasted nuthatches. In early August 2012, one of the largest irruptions of this northern species in living memory started with reports from counties in eastern Pennsylvania. By the end of November unprecedented numbers were recorded in all 67 counties in the state. In late September the first purple finches arrived in Pennsylvania…

  • Superflight

    Last winter was the kind of winter birders dream of. Not only did we have a classic “irruption” of winter birds from the north but a “superflight” in which all the highly irruptive finches–pine grosbeak, purple finch, common redpoll, hoary redpoll, pine siskin, evening grosbeak, red crossbill, and white-winged crossbill, as well as the red-breasted…

  • Irrupting Birds

    Every winter birdwatchers hope for an irruption of boreal birds from the northern forests. This “irruption” or irregular migratory movement southward of birds that ordinarily live and breed in Canada and Alaska include glamour species such as pine and evening grosbeaks, purple finches, red and white-winged crossbills, pine siskins, common and hoary redpolls, red-breasted nuthatches,…