648. Compsothlypis americana usneae 
NORTHERN PARULA WARBLER. 4 1-2 inches 
Male. Above gray-blue; yellow?sh patch on back ; wing bars and tail 
spots white. Below, throat and breast yellow, with dark band 
across breast, belly white. Female. Similar, colors duller, often 
without dark band on breast. 
Also called Blue Yellow-backed. It frequents the tops of the trees, 
but during migrations is often found in orchards and park shrubbery. 
Arrives in Massachusetts about May 12. 
Song. Starts with a buzz and ends in a husky warble like f-7-7-¢ 
with a strong accent. 
Nest. Suspended from a branch in orchards or on edges of woods, 
made of usnea moss. 
Breeds. In New England in localities where there is usnea moss. 
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