Number of albatrosses over runway 
70 
60 
50 oe 
a = 
rT 
Pf Ne 
| | \~x 
40+ | | e. 14 % 
yy Nee Black-footed 
| | 
_ ( 
ae, 
30} | 
|| ie 
| AS 
| : ; XN wy 
; \ 12 7 
ae ‘ a AN Pe ee footed 
| {Ss \ / 
Ne / ‘eo 
| / ere ee C Black 
é Lor . ac ai, 
es / ) ~S7 Ke Footed?" aN 
; North End kR Bae Al fo 
/ or TE SY Black-footed\ 
SN ea eC \ ) _- of. 
: ~~ \. i nae hea a 
/ ‘\ So S07 
O 
7am Sa.m. \iam. Ip.m. 3p.m. Sp.m. 
Time of day 
Figure 9. Runway counts of albatrosses. (Total albatrosses in air over 
17 
runways, November 23, 1956.) 
