Coyotes 
247 
coast, and from Alberta south into Mexico. They are found in 
every part of the State of Colorado, from the plains up into the 
mountains to or above timber-line. Nebrascensis is a plains form, 
but may be replaced in the southeast corner of the State by frustror, 
as certain Baca County specimens seem to belong to that form. 
If estor is in the State at all it v^ill be found in the extreme south- 
west portion. The other two, Icstes and mearnsi, are mountain and 
foot-hill forms. 
FIG. 78. COYOTE IN TRAP 
Rob't B. Rockwell, Photo. 
Habits. — Coyotes, instead of decreasing with the advance 
of civihzation and setthng up of the country, seem to increase 
and actually thrive under those conditions. As a con- 
sequence the animals are as numerous in the West as they 
ever v^ere. Living as they do in all the life zones from Boreal 
down into portions of the Tropical, they have shown them- 
selves adaptable to all circumstances. It is possible that 
in Colorado those forms which live at the highest elevations 
may make a limited vertical migration, going to a somewhat 
