The Moose Brook Preserve lies at the heart of the Moose Brook Valley: a region of great ecological significance in the region. The Valley and its associated supporting habitats have been declared an Important Bird Area by a panel of international conservation organizations due to its high density of breeding Neotropical species that are otherwise experiencing serious population declines. The Moose Brook Preserve holds a wide suite of interior forest breeding birds and offers terrific bird-watching opportunities. The lower Valley as a whole has been described in chapters of the recently published Bird Finding Guide to Western Massachusetts published by the UMass Extension.