Vol. 20, No. 8 
Page 2 
Tab ,e 1. Percentage of 73 of seeded roadsides on the FCHU -mowed through 
15 July and 1 August, 1970-77- ________ 
, g70 w , ,972 ,973 '974 1975 1976 ,977 
Year 
»'•> *•> ,i *-° 
8i.o 7».» «•" “■* M ' 5 
1 August 
Ecology and Managemen t of Sgui rrej_s 
C. M. Nixon, 
L. P. Hansen 
.. ^ v cnnirrels have not been well documented- 
Breeding rates for female year ' n 9 yearlings breed only once during their 
The prevailing view seems to in ica ^ from Dece mber to September, during 
first breeding year (a breeding Y twice, or not at all) and have 
fewer -^^ared b "~"- 
We have examined yearling fema 1es oin sie vera^ study ^® a * once , ved when 10-14 
found that only about 35 ' « a eatings, fe^er than half bred when 
months old. Of those that did not breed as y ^9 rate , s much lower than 
has'been" 1 reported for' fema^e^year I i ng gray sguirrels, about 60 percent of which 
breed at 10-12 months of age. 
All females examined were from unhunted ^^'^jf^^jens'i'ty/par't'iculfrW of 
80 percent of the squirrel population. This 9 J through harassment of the 
---- - — breedin9 - 
. , .. d i westemeier, 
Responses o£ Prai rie Chick ens to Habi ta ^t Hampu a i on D R- Vance 
, Q „ 5UC cess on the sanctuaries at Bogota was 
For the first time since 1972, nest succ thjs 5 ummer, 3 (12-5 percent) 
t: d si 3 l^ 4 ;hi^ Cen ^ W6, S l6 C :^lsful' nests 3 produced at least -49 chicKs. 
Other indications of a favorable reproductive season^re -^bsenc^of^est 
^^'o^esCed^tr^Al::: 5S nJ^of fertile eggs per clutch increased 
