1853] 381 
not satisfied that this fact was of a generic value,and consequently described the 
species as a Cambarus with the same propriety as he might have placed it in the 
genus Astacus. 
August 23d. 
Vice-President BRIDGES in the Chair. 
A letter was read from the Librarian of the Royal Academy of 
Sciences of Amsterdam, dated 27th July, 1853, asking for certain 
volumes and numbers of the Proceedings, to complete their series. 
August 30th. 
Vice-President BripGEs in the Chair. 
The Committee on Dr. Hoy’s continuation of his paper on the Orni- 
thology of Wisconsin, reported in favor of publication in the Pro- 
ceedings. 
Notes on the Ornithology of Wisconsin. 
By P. R. Hoy, M. D., of Racine, Wisconsin. 
[Continued from page 313. ] 
CERTHIADA:, (5 species.) 
*Certura AMERICANA, Bonap. 
Common throughout the year. 
*Srrra Carorinensis, Linz. 
Common, remains during the winter. 
*Sitta Canavensis, Linn. 
This species does not remain with us during winter. A few nest near Racine, 
a greater number in the pine regions in the northern part of the State. 
* PaRUS ATRICAPILLUS, Linz. 
Abundant, remain during winter. 
Parus Hupsonicus, Lath. 
A small party of this northern species visited Racine during the unusually cold 
January of 1852. 
AMPELID, (2 species.) 
BoMBYCILLA GARRULA, Vievll. 
Arrives in large parties from the first to the last of November, and leaves by 
the 15ta April. Te first arrivals are all young birds, destitute of the yellow 
markings on the wing, and with less of the wax-like appendages. These young 
' birds generally proceed further south to winter, while the old birds, in perfect 
plumage, arrive later, and seldom, if ever, go further. I never have seen an 
individual entirely destitute of the waz ornaments. The only perceptible differ- 
ence between the sexes is in size, the females being slightly the larger. In 
fifty specimens accurately measured, the average was : 
Females, . : 6 5 A § 5-12—14}. 
Males, Si aes ven Ia iy Ste Oeste 
They are unsuspicious, permitting a near approach. Their fare consists of a 
variety of berries, but those of the mountain ash, (Pyrus Americana,) appear to 
be preferred to all others. They are frequently seen to eat snow as a substitute 
for drink. 
