300 



The Wilson Bulletin — No. 91 



of them were of large size and she frequently brought them 

 so large the nestlings could not swallow them. When this 

 happened she crushed them in her beak until they could hz 

 devoured. Next to grasshoppers, moths were the most 

 abundant. The majority of those brought were small, dull 

 colored ones but occasionally a la-rge grey or dull white one 

 was seen. . Spiders were also common and the most of those 



Searching' for Excrement. 



fed were caught along the shore in the bits of drift wood. 

 Altogether during the 170 feeding visits she brought ^(K> mor- 

 sels of food. Of these, grasshoj^pers were 34.97%, moths 

 9.37%, larvae 9.3.")%, unidentified 17.24%, and the remain- 

 ing 29.09%' was composed of various insects. The unidenti- 

 fied were mostly small insects cai)tu'red among the arrowhead 

 lilies but we could not i(k'ntif\- them. .\ vorv small fro,;' was 



