Vireos are more often heard than seen for they feed slowly thru the tops of high trees, but have an endless series of notes and sing during the hot summer days when other birds seek shelter. The song consists of a series of short phrases sometimes rising, sometimes falling, as if the bird were talking to himself, even answering his own questions, with a distinct pause between. Some of these notes have a robin or tanager-like quality, but the repeated song soon places the bird.
When you see this sparrow-size bird, you will find that he has a clear white line over the eye, bordered with black. This is his only outstanding mark for he has no wing bars. His general appearance is greenish-gray above, white below with a greenish-yellow tinge on the sides and flanks. His red eye is not distinct enough to make a good field mark. His main diet consists of leaf-eating worms.
With others hushed
By summer’s sun
He still sings on
As tho ’twere fun.
Myrtle Warbler
Dendroica coronata
The Myrtle Warbler is a member of a colorful family of American birds most of which are smaller than sparrows, have thin pointed bills, are more active than vireos. They are often referred to as the butterflies of the bird world. The Myrtle Warbler is presented because he is the first to arrive in spring, often before the leaves arrive to hide him from view. This 5½-inch bird has 4 yellow marks which will identify him: the crown, rump and each side of the breast. He appears darker than most warblers, being blue-gray above, white below with black marks across the breast and back beneath the wings. The white throat and 2 white wing bars offer contrast. Females and young lack the brilliant markings of the male, but the yellow rump patch will identify the birds. The white throat distinguishes this from other warblers which show a yellow rump.
This bird is a migrant since he prefers to nest in the evergreens of Northern United States and Canada. He feeds on insects and larvae which infest our trees but captures many flying insects when available. Often he winters farther north than you would expect to find warblers and then feeds on small berries. Myrtle or bayberries are a favorite food and the name of the bird indicates its fondness for these berries.