Harris—Birds of the Kansas Cuty Region. 333 
of the county, especially in the bluff and bottom regions, be- 
tween the Ist and 20th of May and in late September. It is 
noted regularly in Swope Park and the upper Blue Valley and 
in the timbered sections of the Country Club district. 
This Thrush frequently sings in the period of migration, par- 
ticularly toward the end of its stay, but in very subdued tones. 
HYLOCICHLA USTULATA SWAINSONI (Tschudi). Olive-backed 
Thrush. 
Common migrant. 
This species is often in full song during the latter days of 
its spring passage. It arrives during the first week of May, be- 
coming more numerous from the 10th to 20th. At this time it 
may be looked for in all wooded regions, especially in the river 
and creek bottoms. Stragglers have been noted during the last 
days of May and there is one record of a singing male in Swope 
Park on June 7, 1916 (Shirling). The species is again present 
during the last half of September. 
HYLOCICHLA GUTTATA PALLASI (Cabanis). Hermit Thrush. 
Regular and not uncommon migrant. 
The Hermit Thrush is the earhest in spring and latest in fall 
of all the migrant thrushes. It arrives in late March and is 
seldom seen after the middle of April. It is present again dur- 
ing the first three weeks of October. 
It frequents the same wooded places as the others and may 
be looked for in Swope Park, the upper Blue Valley, in the 
bluff and bottom timber, near the Country Club, and many 
other less accessible places in the county. 
We have no record of the singing of this species while migrat- 
ing through this region. 
PLANESTICUS MIGRATORIUS MIGRATORIUS (Linn.). Robin. 
Abundant migrant, very common summer resident and rather rare 
but regular winter resident. 
It is safe to say that there is not a day in the year when Rob- 
ins are entirely absent from Jackson County. During the cold- 
est periods of the most severe winters a few are always to be 
found in the dense shelter of the bottom timber where there is 
an abundance of wild fruit for food. In open and mild winters 
they are to be found even within the city. 
The forerunners of the migrating throngs arrive from the 
