146 Dr. W. E. Collinge on the [Ibis, 



Tadpoles or very young frogs were present during five 

 months, and tlie remaining food items occurred in each 

 month. 



The liighest percentage of injurious insects was found in 

 April, viz., 27*5 per cent., and the lowest', 8'0 per cent., in 

 Novem])er. L^rom observations made in the open this item 

 Avas thought to be considerable, but the large j)ercentage 

 found from February to October was somewhat surprising. 

 Tlie species consist very largely of those that are classed as 

 injurious because, either in their adult or larval condition, 

 they feed upon fish ova and the fry, such for instance as 

 the Dragon-fly (^^scfina cyanea Miill.), and all the species 

 of Coleoptera. 



Table III. shows the different percentages side by side of 

 the food items obtained from the stomach-contents and the 

 nest-contents and pellets, and the averages. 



Table III. — Showing percentages and averages of the 

 different food items found in (i.) the nest-contents, 

 (ii.) the pellets, and (iii.) the stomachs. 



Nest 

 Food item. ^ , ' , Pellets. Stomachs. Averages. 



Fish 59-5 59-0 63-5 60-67 



Tadpoles 4-0 



Molluscs 5'5 



Injurious Insects 15"5 



Neutral Insects 4*5 



Crustacea ., 6-5 



Worms 1"5 



Of the various species of fish four only could be identified. 

 The minnow forms the chief item, totalli)ig 390 per cent, of 

 the total fish-content, the stickleback approaches this very 

 closely with 32"0 per cent., then we have 15 per cent, of 

 gudgeon and 13'0 per cent, of trout ; the unidentifiable fish- 

 remains were 1*0 per cent. 



