57° 



Till- BLACK TERN. 



voir. On these occasions the) feed with a peculiar motion, by which they 

 cull some tidbit from the surface of the weed-strewn water, and regain a 

 higher level after each stroke without wetting the wings; but whether they 

 find insect prey or only vegetable matter. I have not been able to determine. 

 In searching for the nests of the Black Tern one must penetrate the 



Jozy recesses 

 ±\ ^ M^F~~~~~~jT~" I "'" sol "e un- 

 ci i s t u rbed 

 swamp, pref- 

 erably in a 

 at - boat. 

 I ere in a 

 tided bay- 

 it the birds 

 ill hen 

 a1> nit the in- 

 truder, fret- 

 ting an d 

 screaming in- 

 cessantly, 

 he water be- 

 comes too 

 thick with 

 mud and tan- 

 gled vegeta- 

 tion to admit 

 i >f easy pass- 

 age, i me must 

 >e content to 

 strip oft' and 



