The call of the chipmunk is a loud chirp or chuck, regularly repeated and audible for a half-mile on still, frosty mornings. It also has a bird-like chirp or rapid call. _Sciurus hudsonicus loquax._ Southeastern Red-squirrel.--This is the most abundant squirrel in the county. Owing to its small size it was formerly not hunted; it also easily adapted itself to civilization and increased so rapidly that in places it became a nuisance. It has been accused of driving off the fox and gray squirrels, for which reason it was exterminated from the University campus, where it formerly occurred. The red-squirrel is very noisy and has a number of calls, chatters, and a whining cough which easily distinguishes it from other squirrels. Several albinos have been taken in Washtenaw County, one pure albino in Dexter Township in 1908, and one nearly pure white, but with brownish dorsal stripe and tail, near Ann Arbor in 1912. _Sciurus carolinensis leucotis._ Northern Gray Squirrel.--Abundant in the county for many years after its settlement. To the early settlers it was an injurious species, as it destroyed much of their scanty corn crop; but in later years it furnished much sport as well as a choice food for the table. Its chosen habitat was the heavy forest of beech and sugar maples, and with the cutting of these woods the gray squirrel has gradually become rare, only a few now being found in the county. As late as 1875 I saw many of the species, about one-half of the black phase. Its call is a high, shrill chatter, which may be heard quite a distance, and which is distinguished by hunters from the call of the red squirrel or fox squirrel. J. Austin Scott witnessed a migration in the fall of 1840, when hundreds of gray and black squirrels crossed the Raisin River near Adrian. They came from the south and were so exhausted from swimming across the river that the boys killed many with clubs. He counted 30 in one small tree near the water's edge. _Sciurus niger rufiventer._ Western Fox Squirrel.--When Michigan was first settled the species was rare and was confined chiefly to the southern part of the state, where it occurred in the oak openings, which seem to be its favorite habitat.[3] With the cutting of the heavy timber it has gradually extended its range, occupying all of the more open forests, and it has become very common, even entering the cities, where it has become semi-domesticated. [Footnote 3: Robert Kennicott, _U. S. Patent Office Report_, p. 56, 1856]. W. J. Beal[4] states that in Lenawee County there were no fox squirrels in the early days, but later they came in from the south. At my home in Lodi Township I never saw one until about 1875, and they were rare for several years after that. [Footnote 4: _Mich. Pioneer Coll._]