146 
Dr. W. E. Collinge on the [Ibis, 
Tadpoles or very young frogs were present during five 
months, and the remaining food items occurred in each 
month. 
The highest percentage of injurious insects was found in 
April, viz., 27"5 per cent., and the lowest, 8*0 per cent., in 
November. From observations made in the open this item 
was thought to be considerable, but the large percentage 
found from February to October was somewhat surprising. 
The 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 (.JEschna cyanea Mull.), 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-eontents, 
(ii.) the pellets, and (iii.) the stomachs. 
Food item. Contents Pellets. Stomachs. Averages. 
Fish . 59-5 59*0 63-5 60*67 
Tadpoles . 4*0 5*5 3*5 4*33 
Molluscs. 5*5 5*0 4*0 4*83 
Injurious Insects . 15*5 15*0 16*5 15*66 
Neutral Insects . 4*5 5*0 6*0 5*16 
Crustacea .. 6-5 6*0 3*5 5*33 
Worms . 1*5 1*5 1*5 1*50 
Miscellaneous . 3*0 3*0 1*5 2*50 
Totals. 100*0 100*0 100*0 99*98 
Of the various species of fish four only could be identified. 
The minnow forms the chief item, totalling 39 0 per cent, of 
the total fisli-content, the stickleback approaches this very 
closely with 82’0 per cent., then we have 15 0 per cent, of 
gudgeon and 13*0 per cent, of trout; the unidentifiable fish- 
remains were 1*0 per cent. 
