Male Galápagos yellow warblers appear to be shifting their behavior and adjusting their calls in response to the din of ...
Their beaks are pale yellow with a black outline at the base that looks like a mask. These birds build their nests directly ...
Built in June on the fork of a horizontal conifer branch near the trunk at low to moderate height, the yellow-rumped Warbler’s nest contains 3 to 6 eggs. Polytypic (6 ssp.). Length 5.3".