jo 
The divergence friendly and hosj^le dis >lays has bxm 
"tic hod even f; 
then in the Arctic Mrn 
ViYIG* 
i k: 
k**% (ru**. tffciiei f»*iJ 
■: Tico-ry 0 i f rgxfc-' In orients: tiop/lo orociuce the 
4 
* 
4 *--r rr 
do se : sculler l tic ■ of the fleck Noddy ennoer to be connected 
Ctj&‘ <4 m 
•v ,h i ; : so 1 1 \ * hnolte 
1 round -nesting terre aech e s the Arctic e.n-1 Oomoon 
ri / , , - 1 .a a are a 
*0 v 
W i W 
Noddy (mean. 
•\i'i , 4 -<-» ■ 
' C .,%& - } fa -A 
b VI 
* c ling 
ds 
■V> 1 1 -v»- V ; 1 1 
* t ,v W y .; X. — . -A. 
„q 'tr.4 
x. q j < > 
>7 12 8 
O.f 
T« :> foe tote c t contribute to hM.- dif 'Terence M) the necessity 
-‘f*' , ■ 
• r the Nod ay tc del oy Itr ‘‘lr. t flight until It con be sure of 
r: ; t <’■• ii n ' 
• O 
a .e. 0 
*5 -» ■wtf 
m, 
: ro 
i > - 
^3 
J f ! 1« 
r> C 
ft . ■>^t 4 « . -f{> '• 
f \ d J f -4 ,' » 
\ *1 •«* • -'• ' 
t e i t 'i 3 to 
A J -,v 
< r 
« O 
f 0 ^ 
v-f -i, • 4. 
3 •>« 
1 • ■* 
* J 
* ^ **? 
if .-vp 
8 i bl ? 
■ ■ r ; . 
f 
c'tif f-n.ee bin# Ttlf.tl r v s eoooarod with grcunl-noe tinpr nulls, 
Thn absence of f cry) tic olunage in the young Is another 
feature .- - sribu oaols to L'i - nut-ux neat sits .u for f r " on torn. 
w. 
tr " '■ / 1 y d .) ■ n ' t tr? tui t ft y 7 ^ ■ tr 
>e 
aiu*JOly O'uid ‘inu> 
•f h 4 *a o ■'■ «n n -t 
j f ti U *»» -■> v» 1 f 
eo oetlntee ncstiiXJn the ground 
e k ev i • r t f -*✓<? ' : 3 o r v t i c 0 0 
boon abm* thsdr 3 to ,u du e ’vi 1 1 
mw *«-* 
sy&dui lest li^fa bus? ven airtftable 
: *o«md * . n$ 2 ting i^appar tly f o32^€u on 
z.t x -^rrrjtfx n setne or rt « 
lech of mi#ff ri tec and 
d sites, £.tst 
through 
’f 1. 1 ? range the 
^ Ci 1 ^ drily b "'peril t twill v:ae re 
t •» 'i s * 
* '• U no Jo 1 • 
F!l»avherc I have argued that the behaviour of terns with 
<v * 
egy-shel vhe the x- they ca rry th' s n e : uy or not 
Jr ' ** fr V 
is a den ted to the 
