FIRST WEEK. March 2 through March 9. 
Gulls come over the Hearth early in the morning. Do 
not land. On clear days they come "below the tree-tops. On cloudy 
days they remain above the tree- tops. . . 
March 3. Most of them arrived around 8:00, although a few 
arrived considerably earlier. March 4. Up to 200 appeared by 
8:15. March 5, (very wet). Only a few appeared. March 6. 
Already 200 by 7:30. March 7. Large numbers by 8:30. March 8. 
Large numbers by 7:00.- 
Usually most of the gulls leave between 9:00 and 10:00. 
One or two may be around at any time during the course of the day. 
On March 8 and March 9 large numbers of gulls spent the day 
in a neighboring flooded field. Most of these sitting on the water* 
Only watched them for a few minutes, and saw nothing but a little 
aggressive behavior. 
The gulls usually arrive over the Hearth in sraall_groups, 
coming in from rather different directions, North and iiiast. 
(We have not yet found their night roost). They are silent on 
ar While over the Hearth they just fly around most of the time. 
A great deal of "Long Call". A great deal of aggressive behavior. 
Some aggressive behavior is present at all times, but much more 
common common when there are large numbers together. However, 
when the weather was fine, a large number of gulls together, 
flying below the tree-top level, the gulls were much less aggreosive 
but they were then liable to many sudden panics. (These panics, 
by the way, are similar to those seen later in the cycle on the 
ground. Birds fly very close together, circle, silent. Breaks 
up immediately. No visible cause). 
Now to get to the aggressive behavior itself. Consists 
primarily of Chasing and Swooping. q _ x<ag a + 
y Tq thf»re ahv difference in the role of the two sexes ax 
this stage? Some birds (much less than half apparently?) are 
Nearly more aggreasiye than others. Some birds neyer swoop or 
chase while we watch them oyer a period of a few minutes. 
Chasing Intergrades with Swooping. One sees whay look 
practically like horizontal Swoops during a Chase. A real^Swoop^ 
K 11 other ‘^hey^l tn^n 
‘inflight 3 'looks as^f^the^hased^were 6 trying to ^vade, and the 
posture .^The^Chas^is J52£°X* ^ 1 “ 
‘may be so sometimes. 
