Dietary biology of the Eurasian eagle-owl but none are heavier than the largest mammalian prey that eagle-owls have taken including greater white-fronted goose ("Anser albifrons"), bar-headed goose ("Anser indicus"), great cormorant ("Phalacrocorax carbo"), Himalayan snowcock ("Tetraogallus himalayensis") and demoiselle crane ("Anthropoides virgo"), all averaging around , the swan goose ("Anser cygnoides"), the common crane ("Grus grus") and the (between the dimorphic sexes) great bustard ("Otis tarda"). Eurasian eagle-owls have also hunted adult male western capercaillie, which average about , although usually the much smaller females, at , are more regularly taken. Although they rarely take domestic birds, the range of sizes killed is just as dramatic,
Otis Norcross great-great grandfather of Otis Norcross, Jr., both of whom served as schoolteachers in the early Watertown colony ("see family tree below"). This Norcross blood-line extends further in perpetuity with Otis Norcross' great grandfather Peter Norcross (1710–1777) whose younger brother William Norcross (1715 – "ca". 1775), and his wife Lydia [Wheeler] (married 6 Nov. 1741), are the great, great grandparents of Otis' third cousin once removed American poet, Emily Dickinson; daughter of Emily [Norcross] and Edward Dickinson; granddaughter of Joel Norcross and Betsey [Fay]; and great granddaughter of William and Sarah [Marsh] Norcross. During the American Revolution, the Norcross family "served