What is "geothlypis philadelphia"

Mourning \Mourn"ing\, a.

1. Grieving; sorrowing; lamenting.

2. Employed to express sorrow or grief; worn or used as appropriate to the condition of one bereaved or sorrowing; as, mourning garments; a mourning ring; a mourning pin, and the like.

   Mourning bride (Bot.), a garden flower ( Scabiosa atropurpurea) with dark purple or crimson flowers in flattened heads.

   Mourning dove (Zo["o]l.), a wild dove ( Zenaidura macroura) found throughout the United States; -- so named from its plaintive note. Called also Carolina dove. See Illust. under Dove.

   Mourning warbler (Zo["o]l.), an American ground warbler ( Geothlypis Philadelphia). The male has the head, neck, and chest, deep ash-gray, mixed with black on the throat and chest; other lower parts are pure yellow.