Wyominc Birps. 67 
613. Hirundo erythtrogastra: Barn Swallow. 
Common summer resident over most of the state at the 
lower altitudes. 
614. Iridoprocne bicolor: Tree Swallow. 
Knight said that it was summer resident; not common and 
distributed rather locally. This evidently is still the case, 
as only Blackwelder, Walker, and Clearwaters have noted it. 
615. Tachycineta thalassina lepida: Northern - Violet-green 
Swallow. 
Abundant summer resident from the foothills to timber 
line in many portions of the state. 
616. Riparia riparia: Bank Swallow. 
Abundant summer resident over most of the state. 
617. Stelgidopteryx serripennis: Rough-winged Swallow. 
Knight said that it is probably a summer resident, but that 
the data was insufficient to mark its occurrence in Wyo- 
ming. Blackwelder has since recorded it from the Teton 
region. This is the only recent record. It is probable 
that many are recorded under the preceding form which 
should properly be placed under serripennts. 
BOMBYCILLIDAE (Waxwings). 
The Waxwings are fond of wild and cultivated fruits of vari- 
ous kinds. They are sometimes a nuisance in cherry trees. The 
young are fed mostly on insects and their larvae, and the adults 
are ereat insect destroyers. When a flock of these birds enters 
an orchard infested by canker worms, they are likely to rid it of 
these pests. Elm trees are also protected from elm leaf beetles. 
The Waxwings feed upon a variety of insects and they are. great 
eluttons, stuffing on fruit or insects until they can swallow no more. 
They are on the whole beneficial and deserve protection. 
REFERENCES : 
1. North American Fauna 19, p. 89. 
2. “Useful Birds and Their Protection,” Forebush, pp. 209-211. 
618. Eombycilla carrula: Bohemian Waxwing. 
Knight reported that it was a winter resident and locally 
abundant. Richard now reports that they are common 
