498 Dr. A. L. Thomson : Results of a Study of [Ibis, 
TABLE XIY. 
Seasonal Analysis of Reappearances of Herring-Gulls 
CAUGHT ON THE SHORE AT NIGHT, MARKED AND RELEASED, NEAR 
Aberdeen, September and October 1910. 
. 
Month. 
1 
Aberdeenshire, j 
Orkney Islands j 
and Caithness. 
Denmark and 
Germany. 
Total. 
November ... 
1 
_ 
_!_ . 
1 
December ... 
jpplfS 
— 
— 
January . 
1 
■' ■ .— ' 
. ' .V:;i 
1 
February 
— 
— 
— • 
—>■ 
March. 
1 
■ — 
— 
1 
April . 
— . 
1 
1 
May . 
— 
1 
1 
2 
June . 
1 
. — 
1 
2 
Total ... 
4 
2 
I 
2 
1 
8# 
1 
( # Two records refer to the same bird (Case 205).) 
Of the above, 3 were recovered in the first year after 
marking, 2 in the second, 2 in the third, and 1 in the fourth. 
Although the number of records is not great it is sufficient 
to show that the Herring-Galls found on the Scottish coast 
in the late autumn are of a category different from the native 
birds, thus bearing out the conclusion that most of the latter 
move southwards in winter. The differences include winter 
records from the area of marking and summer records from 
farther north and from the Continent. Case 205 is of 
special interest in showing that the bird returned to the same 
winter area after having been to the Orkney Islands in an 
intervening summer. 
Taking: both sets of data together it seems fair to conclude 
that our native birds tend to wander southwards in winter, 
mainly within the British area, and that Continenlal birds 
appear as winter visitors. 
In addition to the two sets of records dealt with above, 
Herring-Gulls marked as chicks in 1910 in the Lewis, Outer 
Hebrides (Case 112), and in Berwickshire (Case 232), were 
recorded from the same localities on 5.12.10 and 3.8.11 
respectively. 
