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 Jan., 1913 OUTLOOK FOR CONSERVING THE BAND-TAILED PIGEON 27 trates in winter in west-central and southern California. It becomes apparent, therefore, that as far as the whole Pacific Coast region is concerned, California alone is in winter responsible for the existence of the species. The accompanying map (fig. 7) serves to show both the summer and winter distribution of the Band-tailed Pigeon within the state. Because of' the small scale, record stations for the two seasons in some cases appear to be almost or quite coincident. But the rule may be laid down without hesitation, that this bird THE BAND -TAILED PIGEOn[ IN CALIFORNIA DISTRIBUTION MAP x'dC'; -'-:"'x x -. Fig. 7 summers in the Transition zone and winters in the Upper Sonoran. 'Within our State there is thus a vertical migration coupled with a winter influx of birds sum- roering to the north. Thee is nothing to show that the individuals nesting locally on the moun- tains, and the northern migrants, flock separately, though this is possible. Neither is there any evidence to show that birds hatched in a particular mountain range always return to the same vicinity the following year, this being th case with some kinds of birds. On the contrary, our data does show, as far as it goes, that