The tawny edgings of the upper plumage soon fade and wear away before the postjuvenal molt begins during August. I have seen birds in full juvenal plumage as late as September 15; the molt is usually not completed until late in October, but I have seen it well advanced by the middle of August. This molt includes nearly all of the contour plumage, but not the wings and tail, so that first-winter birds can be distinguished from adults by the juvenal wing coverts and tail. The first prenuptial molt occurs mainly in April and May; it is sometimes completed by the last week in May, but more often not until early June; I have seen the full first-winter plumage retained until May 21. This molt involves the entire contour plumage, some wing coverts, and the tail; so that young birds in first nuptial plumage closely resemble adults and can be distinguished only by the presence of some old juvenal wing coverts. The sexes are quite unlike in this plumage and are probably ready to breed. Certain females, in which the black crown and white cheek patches are obscured with buff and rufous tints, but are otherwise in full plumage, are perhaps young birds. At the following molt, the first postnuptial, the adult winter plumage is acquired, characterized by the bluish-gray mantle and the white under parts. This molt is complete; it begins in July and is sometimes completed in August, but more often it is prolonged into September or later. Adults have a partial molt in the spring, from March to May, involving the contour feathers, the tail, some of the tertials, and some of the wing coverts; the remiges are not molted, and some of the old scapulars are retained. The adult postnuptial molt, from July to December, is complete. _Food._--During the month or so that they are on their northern breeding grounds the red phalaropes are shore birds, feeding in the tundra pools or along the shores, but during the rest of the year they are essentially sea birds, feeding on or about the floating masses of kelp or seaweeds, or following the whales or schools of large fish; hence they are aptly called "sea geese," "whale birds," or "bowhead birds." They occasionally come in to brackish pools near the shore or rarely are seen on the sandy beaches or mud flats feeding with other shore birds. Outlying rocky islands are often favorite feeding places. Ludwig Kumlien (1879) writes: