. Birds of California; an introduction to more than three hundred common birds of the state and adjacent islands . IDENTIFICATION The accompanying chart of a bird will explain the termsused in the descriptions. Upper parts refers to theentire upper surface of the body of the bird from the billto the tail. In the same manner, Under parts refersto the under surface. In identifying, decide first into which class the bird j^ouare observing is likely to belong, — that is, whether landor water birds. If water, whether it is found on the opensea, or near shore, or in bayous or marshes, and whetherit
. Birds of California; an introduction to more than three hundred common birds of the state and adjacent islands . IDENTIFICATION The accompanying chart of a bird will explain the termsused in the descriptions. Upper parts refers to theentire upper surface of the body of the bird from the billto the tail. In the same manner, Under parts refersto the under surface. In identifying, decide first into which class the bird j^ouare observing is likely to belong, — that is, whether landor water birds. If water, whether it is found on the opensea, or near shore, or in bayous or marshes, and whetherit is a swimmer or a wader, and then look for it in the listwhere you think it may belong. Always ascertain as nearas you can the birds lengthy and remember, in judginglength, that a bird usually looks smaller than he actuallymeasures. If the bird is among the land birds, and isneither a game bird nor a bird of prey, trace it down in thecolor USE OF THE MAP The four Life Zones iudicated on the accompanyingmap are those mentioned in the data given under theheadings Geographical Distribution and Breeding represent climatic conditions of temperature in theregions indicated. The Boreal extends from the tree-less, snowclad summits, far above the timber-line downthrough the coniferous forests. Next in coldness is the Transition, which begins at the Yellowpines, overlap-ping the Boreal a little, and containing some species ofoaks, buckbrush, manzanita, and some sagebrush. Lyingbetween the Transition and the almost tropical heat ofthe Lower Sonoran is the Upper Sonoran, wherewe find the juniper, oaks, piUon pines, and of all, the Lower Sonoran is the warmest. In itlie the hot valleys and desert regions of California, andhere flourish the live oaks and mesquites. Many Cali-fornia birds migrate from one to another of these zonesbetween breeding seasons, as the birds of the EasternUnited States migrate north
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Keywords: ., bookcentury1900, bookdecade1910, bookidbirdsofcalif, bookyear1912
