THE BIRDS OF FLOYD COUNTY, IOWA. 233 
to be found in the several huge chimneys, the deserted attic, 
and the tower of the building. 
112. Archilochus colubris (Linn.) Ruby-throated Hum- 
mingbird. This species appears as early as May 6 (1913 two 
specimens, Charles City,) the bulk of the birds appearing in 
the third week of the month. They nest commonly, though 
irregularly, throughout the county and seem to vary in num- 
bers from year to year. They usually leave in the second 
and third weeks of September. 
They are popularly confused with the large Tomato Sphinx 
-moth (S. maculatus) when on the wing. Strangely enough, 
a distinction is not always made between the two when dead 
specimens (mostly of the moth) are found. This is, to my 
mind, an extreme example of the carelessness with which 
the average person observes the animals about him. I have 
several times been called on to explain the differences between 
a Sphinx and a bird! 
113. Tyrannus tyrannus (Linn.) Kingbird. This species 
is a very common summer resident of Floyd and adjoining 
counties. It arrives in early May, with the bulk of the 
migration appearing between May 15 and May 24. Numbers 
decrease in late August, and by the middle of September most 
of the birds are gone. On September 21, 1920, I saw two 
Kingbirds at Willow Pond, the latest date I have for the 
species. 
114. Myiarchus crinitus (Linn.) Crested Flycatcher. An 
uncommon migrant and rare summer resident. In the sum- 
mer of 1916 a pair nested near St. Charles church, and in. 
1918 I found two nests along the Cedar River southeast of 
Charles City. On August 4, 1916, two individuals were seen 
at Rockford. 
115. Sayornis phoebe (Lath.) Phoebe. The commonest 
flycatcher in the region is this species, which arrives in late 
March and early April. In 1915 the species was observed in 
Charles City by H. C. Brown and myself on March 21, the 
earliest date of which I have record. 
116. Myichanes virens (Linn.) Wood Peewee. A common 
summer resident which usually arrives between May 6 and 
May 14.. It departs in early September. 
