
No. of 
Birds 





x x 
. x 
j N x 
, N x 
4 x x 
x a 4 
‘ x 
‘ ‘ x are x 
N ‘ \ xX 
‘ ‘ x x 
‘ ‘ x N 
‘ XN » ‘ 
x x ‘ . 
‘ x x N 
x \ Mm 
x x x 
N ‘ \ 
XN x nN 
x x 
‘ x 
‘ x 
X ‘ 
x 
x 
N 
~ 
x XN 
‘ 
‘ 
MN 
‘N x 
x 
\ 
‘ x 
“ A ‘ x % 
x x ‘. 
ere eh if Me 
‘ are ‘ ‘ 
x ne i‘ sw S 
x x | x 
iN x x ~‘ 
x Ny XN 
‘ x 
x ~ 4 
‘ 
N ‘ ‘ 
x s 
‘ = 
FF 3 
‘ 
‘ x 
‘ XN 
* x 
\ XN ~{ 
* ‘ 
‘ XN 
‘ 
| >= 
= N x x 
‘ cA 
No : s 
~ ‘ ‘ x 
Nw * ‘ 
NS * NS 
x ‘ ere SY 
‘ x xy y ~ 
‘ ‘ ‘ M4 < 
Pe ae \ x x A 
a a ene Se. ee | 
9.00p.m. 9.20 9.40 10.00 10.20 10.40 








x 
x _ 
N 
are. ere ae 
~“ 
* x 
an 
\ 
x 
“ 
eS 
y “ 
if s\ 
wNON 
RAN ADS 
x 
SK x ~ 
\ 
* 
ay : 
x 
‘ 
X 
a an 
SOAS 
x 
XN 
‘ 
x s 
x 
a ene hs 
x 
x * ~ 
N 
~ QS 
SNOAUNS NSS 
x on 
‘ Ss NCRONCALNS 
~ aN 
~ ~™WN AK * 
SK SN NSE 
x wu 
~NO AS ere 
eA AOA NS cN\S 
a a a\S 
.Nw* 
x ~~ 
USS oN 
x 
~uN 
‘ \ 
x ‘ ‘ ‘ N oa x x 
N x x . " ‘ 
‘ x x ~ x x N 
‘ “ x ‘ x x 
N ‘ oa x x 
is ‘ x s 
x x 
‘ x 
~ N 
x ‘ 
x x 
‘ x 
‘ x “ 
x s 
x x 
Xv 
“ x 5 
x 
x 
N 
‘ 
x ‘ 
x 
‘ 
~ 
~ 
x 
N x ‘ 
‘ ‘ 
‘ “ ‘ ‘ 
SF ‘ “ ‘ 
“ “ x ‘ ‘ 
‘ ‘ x N x 
s x \ x NN 
he ‘ N x 
“ “ ~ 
by x ‘ i x 
y ‘ i N ‘ 
‘ ‘ x x 
‘ ‘ XN N “a 
~ x x x x Pa 
s\]/ 
‘ 
‘ 
x 
~ 
wy 
X 
x 
N 
(es Se eS a ed ee 8 a ee ee | oe ee 
3.40a.m. 4.00 4.20 4.40 5.00 5.20 5.40 

77, Numbers and durations common to all dates 
Total marginal winnowing (= that which occurred only one or two days 
Figure 3.Gomparison of post-sunset and pre-dawn winnowing 
at Tompkins, Newfoundland ,MayI!-13, 1943 
50 
