Pa) 
685. Wilsonia pusilla 
WILSON’S WARBLER. 5 inches 
Male. Above bright olive-green; head yellow, with d/ack cap. 
Below yellow; no wing bars nor tail spots. Female. Similar, 
black cap sometimes indistinct or wanting. 
Also called Wilson’s Blackcap. Active birds found in the under- 
brush, flycatcher manner. A migrant in Massachusetts. Arrives 
about May 10. 
Song. A few weak, rapid notes. 
Nest. Of leaves and grasses, on the ground. 
Breeds. Northern New England and eastern Maine. 
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