ALBANY, NY (AP).- Genetic analysis at the state museum confirms what biologists squishing through Adirondack bogs already knew: New York’s population of the spruce grouse, a chicken-like bird of the boreal forest, is nearing extinction. Avid birders travel great distances to glimpse rare boreal species in the cool, moist forests of the Adirondacks and other Northeastern mountains. While boreal species — including the boreal chickadee, Bicknell’s thrush, blackpoll warbler and gray jay — are plentiful further north in Canada, biologists say global climate change and habitat