A. H. Howell (1932) calls this southern subspecies "an abundant spring and fall migrant [in Florida]; a common summer resident south at least to Osceola County; and a rare winter resident, chiefly in the central and southern part. Owing to the presence of a few wintering individuals, it is difficult to determine when spring migration begins. * * * Positive evidence of migration is furnished by the appearance of large numbers striking the light on Sombrero Key, March 3, 1889, when 250 birds were observed and 30 were killed. This species is one of the most numerous and regular visitants at the lighthouses on the east coast and on the Keys." Many of these were, of course, the northern race. Of the haunts of the southern race, he says: "The dainty little Parula Warbler is found most frequently in cypress swamps or heavily timbered bottom-lands, and to a lesser extent in the upland hammocks. The abundant Spanish moss on the trees furnishes ideal nesting sites for the birds." _Nesting._--Except for the fact that the so-called Spanish moss (_Tillandsia_) replaces the beard moss (_Usnea_), the nesting habits of the two races are very much alike. A. T. Wayne (1910) says that in South Carolina "the nest is always built in the festoons of the Spanish moss, from eight to more than one hundred feet from the ground, and is constructed of the flower of the moss and a few pieces of fine, dry grass." The nesting habits in Florida are very similar. In southeastern Virginia, according to Harold H. Bailey (1913) this southern race is:-- a most common breeding bird in its favorite haunts, the cypress or juniper swamps of the southeastern section; Cape Henry southward. These trees seem to furnish particularly fine feeding grounds, and wherever you find one festooned with the long, hanging Spanish moss, here also you are likely to find one or more nests. In this section I should call them a colony bird, for in days past I have seen on the trees in and surrounding one small lake, as many as two hundred pair breeding in company. The Dismal Swamp and its surrounding low territory has been an ideal spot for a feeding and breeding home in years past, but of late, the cutting of the juniper for commercial purposes, and the disappearance of the moss to a great extent, has driven the majority of the birds elsewhere. _Eggs._--These are indistinguishable from those of the northern parula warbler. The measurements of 50 eggs average 16.2 by 12.0 millimeters; the eggs showing the four extremes measure =19.5= by =12.7= and =14.0= by =11.0= millimeters (Harris).