Aging has been described as the predominant cause of vertical ridges on the fingernails. Onychorrhexis is the medical term used to describe longitudinal ridges on the nails that often accompany brittle nails. In contrast to longitudinal ridges, Beau's lines are horizontal or transverse depressions in the nail that may be confused with nail ridging.
Ruby-throated Hummingbird Migration. Ruby-throated Hummingbirds normally spend the winter in Central America. From March through May they migrate north, some through the eastern two thirds of Texas, some apparently through Cuba and Florida, and some apparently directly across the Gulf of Mexico. Birds reach the southern Gulf coast in late February and early March.
The following hummingbird species are known to occur in North Carolina (with photos and ID assistance): Ruby-throated Hummingbirds (Archilochus colubris) - Native Breeders - Common during the summer, rare in the winter. They usually arrive in March for the breeding season and leave in September or October to return to their wintering territories Males usually depart first, and females and the young follow about two weeks later.