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 
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- 
mering to the north. 
There 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 the case with 
some kinds of birds. On the contrary, our data does show, as far as it goes, that 
