SEVENTH WEEK. 14th April - 20th April. 
(All page references are April) 
Not a particularly good week allthough weather excellent. 
Gulls around hide or mainland neither spend very much time there 
not are they very active during that time. We are waiting to get 
on to the Hearth. 
1 . Upward . 
We begin .to think that U is more aggresive than F. ^uite a number 
of examples of very aggressive U's this week. 
Preceding attack. (M.14,2; M.15,12; M.19,8). Many 0’s done by 
unusually aggressive pair. (M.19,7). U during boundary dispute 
(M.15,13; M17,10; R.14,3; R14,4). U alternating with choking 
(M.19,9). U's between pair (R.14,1). 
Drawing of U with spread wings (M.19,9). 
U & F together emphasized common during disputes eg: (M. 14, 3; 
M.17,12). 
2 . Forward . 
F attitudes who retreats immediately (M.14,5; M.19,5). F pre- 
ceding attack on water (M. 18,1). 
Partners F at one another when intruder birds (li.14,3). "H.F" in 
F (M.18,2). More F's done by intruder than owner of territory 
(M.19,3) 
3 . Mutual diplay . 
Still performed. Often abbreviated. Classical M.d. on water 
(M.19,5). Male in F longer (M.19,10) 
4 . Erect posture . 
Chasing opponents in E (M. 14, 3-5; M.15,12; M.17 , 5-11 ;M.19 ,3-6 ; 
R.14,7) . 
Aggressive E by female et male who later attempts mount. Male is 
less agg.E (M.15,2). 
Agg. E change by female at heighbour (M.15,10). Attack call in E 
(M. 17,5). Attacks by female at strenga male are preceded by E 
a&d HF (M. ?) 
Bird flees in anxiety e (M. ?). Bird screames in E, opponent 
chokes & flees (R,17,3). Bird in E gives way to choking bird (R. 
20,3) 
5 . Choking . 
Description & slight discussion. Wings & tail caesed (M.14,2). 
Alternating with U's (M.19,9). Preceding attack (M.15,9; M.19,6). 
During boundary dispute (M.15,12; M19,2-8; R14,4). Following 
attack (M17,6; M.19,7). Towards intruder collecting nes tmaterial 
(R.14.7&8) . 
