749. Regulus calendula 
RUBY-CROWNED KINGLET. 4 inches 
Male. Above olive-gray; scarlet crest displayed at will; wing 
bars tinged with yellow. Belowgray. Female. Similar, no crest. 
A spring and autumn migrant in Massachusetts. Arrives in April. 
Song. Rich and loud, suggesting a wren. 
Nest. In conifers, usually pensile. 
Breeds. North and east of New England. 
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