542, MR. J. S. HUXLEY ON THE 
five or six feet, calling (‘‘ barking”) the while. - At length Y 
came up with a loud trumpet call, there was a great flying of all 
three, “ Y” was driven off, and the pai had a short bout of 
shaking. 
This is something like 2—hostility evinced from the start by 
“VY,” the pair acting together against the intruder, 
8. I only once saw two pairs come into conflict; and un- 
fortunately could not make out much. There was much diving, 
and, finally, two birds went off together; the other two had a 
short bout of shaking. 
Finally come the two cases where apparently two “odd birds” 
meet. 
9. In one I saw a short bout of shaking. Then the cock went 
off in the search (Dundreary) attitude; the hen, though quite 
close, took no notice, and the cock finally went right off. I am 
almost sure it was this same hen who later shook with another 
cock. 
10. Jn the other (p. 546), a cock came flying over, settled near 
a hen, and they had a short bout of shaking. Then the cock dived ; 
the hen still kept her ruff up expectantly, but the cock came up a 
long way off, swimming away from her, and she put it down ; 
and so the scene ended. 
In both these cases it is pretty clear that the birds were not a 
pair, but that, finding themselves together, they tried a bout of 
shaking. This, however, was somehow not satisfactory—it was 
not what they were accustomed to; and they parted. Both 
times one bird (as it happened, the male) was obviously searching 
for his mate, and it may be that this “ prepossession’’ led to the 
flirtation being quickly broken off. 
(RABEE AL 
Disposition of X to “ Y.” 
AS Les = Ey 
Sex of SiYer 
| lie = erase a H 
3 2 P 
| (@) X flirtatiously disposed to “Y” .........-........ sy ie 
(OD) PPXGindifterentytopVacu se oe 4 | 3 2 
(Oxo rostilertow ayy et Ue a iS) Ste ik ila we 1 | 2 2 
* In two of the seven cases, X (3) later became hostile to “Y” when his own 
mate approached, and in a third case he was almost entirely indifferent to “ Y.” 
