72 Forestry Quarterly. 



acquainted with the living aspect of the animals and plants of any 

 region. 



Some of the other chapter headings are : The laws of envi- 

 ronmental change ; the laws of internal change ; the continuous 

 process of adjustment. 



The volume should be in the hands of every investigator or 

 teacher whose subject includes' or impinges upon the field prob- 

 lems of biology. C. D. H. 



Michigan Bird Life. By Walter Bradford Burrows. Michi- 

 gan Agricultural College. 1912. Pp. 1-802. 



In the introduction to the technical descriptions of the birds 

 and their habits, the author discusses briefly the bird life in rela- 

 tion to vegetative regions. In the Prairie Region, an extension 

 of the prairie regions of the adjoining States of Indiana and 

 Illinois, one finds in the more open country the prairie chicken, 

 meadow lark, killdeer, mourning dove, marsh hawk, turkey buz- 

 zard, prairie horned lark, lark sparrow and bobolink. Along 

 the tree fringed streams are found the bronze grackle, red- 

 shouldered blackbird, red-headed woodpecker, flicker, and less 

 often the red-bellied woodpecker, orchard oriole, prothonotary 

 warbler and the sycamore warbler. The knolls and ridges here 

 and there harbor the bob-white, the tufted tit. blue gray gnat 

 catcher, and an occasional yellow breasted chat, mocking bfrd 

 and Carolina wren. 



The White and Red Pine Forest Region is now little more 

 than a name, and it comes more properly under the head of cut- 

 over lands and much of it under burned-over lands. In the 

 southern peninsula it formerly extended northward of a line ex- 

 tending from Van Buren County in the southwestern corner of 

 the State, northeastward to Gratiot County and thence eastward 

 to Port Huron. The pines were always distributed irregularly 

 with areas of hardwoods and swamps, the pure stands being on 

 the sandy uplands drained by the rivers. The characteristic 

 birds of the real pine forest are comparatively few. Among 

 them may be included the pileated, three-toed and hairy wood- 

 peckers, the two species of nut-hatch, the black-capped chickadee, 

 brown creeper, Canada jay, black and white, pine blackurnian 

 and black-throated green warblers. 



