Ducs 
Predation v" 
Abstract In 3,d-BanM1, Tol. 2# Io. 3, JulY, 1939, P. 12: 
14. Socia 3shLwo of Bide Dmok.-(Die DrutYSg. der 311seerinsel 
Heila.    e.) Pau  Mathk. 1939. Betr g     7rplxngbolo de V8 ge, 
15:41-50.         i   .tssimu       n vt on the 11s sa l.a 
sanctuary I.1UM+*re. Afte   the yun hatch, flies join force and     ll sort
of 
cobit on* fro tee fealea wth s         tle   yu, tw wth sx y         , si
with 
five y   g, thrteen with sx young up t twenty leai      feal    ar seen.
Some- 
ties a few sl     jin suh o        es. The adlts    fn   the y.ng frm the
reat 
Blackbbsked kills (Lrms~ sawin) by coin  close togtherw, hissing, kickin
up 
the wate and biting at the Gull. Zt is on     whe youg ar with a sinle mothe

that the Guls re able to captare W,