/ 
out. sufficiently ©sro ful Xy 1 1 s ti X X 1 j# fistu^onufc to 
and d i e tingulah young of the two species, e.g. tor ringing, 
he*© &b9ut ton dsy* M . • In their juvenile plu®ag© 
I found I could di8Un^ileh>rW© Common terns were usually 
% uniter brown but the v \riabtli ty la so great*, &t oy n t© 
ln"th-> Arctics, that this ®ethod would probably not bo cos detely 
successful even after considerable practice. 
To return to the d#vlO;Maent of trie young 1 was specially 
interested to see hoe they first be it an to fly* I was able 
to see n . / talc but iso how t **»* •• ™*» _™ 
favourable topography of the colony of too of n 1 on the Inner 
Fame el lose 1 re to survey both the breeding; * ref. and at tue asue 
ti!3© th© Fettle over which the young, birds flew a few *£ter 
they had first succeeded in fluttering off the ground. « I thou t 
any instruction by the adults the young begin to swoop to 
t water surface and lefe u sa&ll objects fl Uttjl ro * 
fn© 8 © usually appe; r to be pisses of seesssi arn. after earry Ing 
the® a few seconds they would drop them only to swoop for the* 
one# again* At this Urn# they return to the a^roxitat# area 
0f the m&t to l m f«& bjr their pa rent# but baoout* ** na 
less' tied .to this area and spend more and more tine on the 
oreenimt places with the adults. Here they continue to be fed 
i believe to b® still *. rents* I 9 seen a 
resumed parent with a fish flying slowly uc ana down the 
whole length of the colony » lUnj repeatedly as they iao^ef ^ 
carrying a fish. Only after nearly two coopj.ete traverses of 
the colony did 1 see a young birds on the r owning roc/.s^ 
WlMlI food-be* flMU aril - t once U.t . feu l fc r° v Prdult"*ita ' 
fed it without hesitation. ioung will V ; / adult witti 
a fish and adults with a fish ar iao lined to *® a „t iJLn\ t i s 
who begs* but there is always seas© hesitation except when it is 
the right parent and. th# right young* 
.y a nd 
During Augur , sore and more you 
desert the breeding area for • close t Kund 
The total number of adult terns has also decreased ^ 1 , 
it difficult to BUT ©fact Impr^&dcm m% &» hearlnntnft 
adult population leftlns to drop, a ho bu^. i.d-up a^ -h« beginning 
of toe season la easier to a#© becauto 1^ to^os ^1 _ ^ 
-ulc^lv but a couple of weelca after toe first arrival so . 
many are about that I can* t recognise any further increases i 
number. However at th© end of & y or be firming o ■ 
( u »s S June in mi) the first one-ywsr old birds »M •«« 
Only a few individual# «ro scon arm tacV *•«* * •>„„ -n-’t 
the clirtshl , hut usually stand about looiiw a# U they 4on t 
nulte Vnow why they era there. T-.ey s.es to \,j_' 
of adult, and too core r t in tu ; courW «*»J «g*g^ 
olda and tray even ua to gto^^ff^ds’on the lony area 
aa the adult* retr their jrounr. Toionv Sre. *5d 
places, they a among ® ^ aBt „^. d 5 ?fL^ GO «te^atlng 
up to toe end some behave 11 # unma ^ ?d b*rds c 
ite 
