The species spread eastward during the latter part of the 19th century. The first record of evening grosbeak in Maine was an incursion in the winter of 1889-1890. The species was not found again ...

who runs the evening grosbeak research station in Marienville, Forest County. The grosbeak irruption is part of a superflight – the third in nearly a quarter century – that also has brought ...

The evening grosbeak’s stronghold is in western Canada and the western U.S. mountains. About a century ago, this species began moving eastward and, eventually, colonized boreal forest regions ...