A nest of this species (Smith. Coll., 589) from Prairie Mer Rouge, Louisiana, has a diameter of four inches and a height of two. Like all the nests of this family, the cavity is very shallow, its deepest depression being hardly half an inch. So far from corresponding with the descriptions generally given of it, this nest is well and even strongly put together, although a portion of the base and some of the external parts are somewhat openly interwoven, as if for ventilation. These materials are fragments of plants, catkins, leaves, stems, and grasses. These seem to constitute a distinct part of the nest, and are of unequal thicknesses in different parts of the structure. Within this external frame is a much more artistic and elaborately interwoven basket, composed entirely of fine, slender, and dry grasses, homogeneous in character, and evidently gathered just at the time its seed was ripening. It is of a bright straw-yellow, and forms the whole internal portion of the nest.
The eggs vary somewhat in size and shape, from an oblong to a rounded oval. Their length is from .80 of an inch to an inch, and their breadth averages .68. Their color is a bright light shade of emerald-green, spotted, marbled, dotted, and blotched with various shades of lilac, brownish-purple, and dark-brown. These are generally well diffused equally over the entire egg.
PLATE XX.
1. Pyranga cooperi, Ridgw. ♂ N. Mex., 34344.
2. Pyranga cooperi, Ridgw. ♀.