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The spring birder may see trumpeter swans, secretive vesper sparrows, indigo buntings and blue-winged warblers.

The just-risen full moon bobbed and weaved over the hilltops like a vesper sparrow chasing a dragonfly.

When bobolinks are present, other grassland bird species such as savannah sparrows and vesper sparrows may also be nesting among the grasses.

However sung, the song, which makes the uplands tuneful all day and every day from April to August, does not vary its quality, which is as fine as the vesper sparrow's.

Like the vesper sparrows, these birds sometimes build a plain, grassy nest, unprotected by overhanging bush, flat upon the ground.