eee Ue DstigblOUNe Bauel sie kere N 7 
TABLE II 
Summary of Four Nests of European 
Tree Sparrow 
(Data Incomplete) 
WEP 1956 
Grand Marias Assumption Valley 
State Park Missouri 
Illinois 
A B A B 
Number of Broods 3 3. 3 3 
Dates 
#1 Building No dates available 5/8 Cyl 
Hatching aes # 6/11 ae 
Departure uf 6/21 7/16 
Young Produced No data No data 
Dates 
#2 Building ae —— he ee 
Hatching 7/5 7/19 Tha -- 
Departure Tf 17. 8/2 = == 
Young Produced 6 3 =o 
Dates 
#3 Building == a= = ate 
Hatching 8/29 9/8 8/8 -- 
Departure == == iss — 
Young Produced = 
Tree Sparrow had been estimated 
in 1959 to be about 1500 birds 
(Wilhelm 1959:5). This estimate 
was represented by winter flocks 
for the most part. At the current 
time with the range rapidly pro- 
gressing into the fertile Mississippi 
Valley, and with colonies estab- 
lished in Jacksonville, Beardstown, 
Springfield and Quincy, I believe 
that a better estimate would be 
about 2500 birds or about 3 birds 
per square mile in their current 
range. 
The European Tree Sparrow 
groups into flocks in the fall and 
winter in the suburban areas and 
flocks of 300 birds are not uncom- 
mon in a good area. In the Spring, 
the birds pair off and spread across 
their range nesting in small colo- 
nies. The urban tree sparrows 
normally winter in pairs or less 
commonly in small colonies. In the 
Spring, these birds’ nesting range 
is similar in proportions to its 
winter territory. 
The European Tree Sparrow 
nests from early April to late July. 
This phase of their life history, as 
well as their wintering habits, dif- 
fer little from those of Old World 
populations. 
Mrs. Eva Kirkpatrick of As- 
sumption Valley made some care- 
ful observations on the nesting of 
the European Tree Sparrow 
(Kirkpatrick,, 1961). On April 8, 
1956, the first nest building activ- 
ities were observed, with the male 
and female carrying nest material 
for the nest, which was contained 
in a birdhouse. The female kept 
the male out of the nest, but ac- 
