Upper Megalloway River, Maine 
Turdus u. swainsonii 
1898 
(Camping on the river bankJ^At daybreak this morning a 
Sept.20. small party of Thrushes circled over us and finally pitched 
down near the tents. The experience of the past four weeks 
has convinced me that the nocturnal flight calls of the Rose¬ 
breasted Grosbeak and the Swainson’s Thrush are practically 
indistinguishable. Early in September I heard Grosbeaks come 
over Pine Point and alight near my tent gradually changing 
the night call into one of the diagnostic day notes. One of 
the Thrushes heard this morning changed the same call in the 
same way into the unmistakable t_ chur-r-r of Turdus swainsonj 
