This is the "Bird Festival" of spring. Traditionally, people went bird-watching from dawn to mid-morning to watch for returning birds/flocks, and would feast and celebrate afterwards is successful. The association of eggs and chicks with this time is a remnant of the Druidic bird association.
Date: ca. March 21, Vernal Equinox.
Modern Equivalent: Easter (Gaelic festival of the goddess Ishtar).
Alignment: Male Solar and Female forces equal.
Customs: Painting/collecting bird's eggs, bird-watching, egg hunts.
Symbols: Rabbit/Easter Bunny, chicks, swallows, coloured eggs.
Sacred Foods: Light foods, fish, maple sugar candies, sweet breads, eggs.
Threshold Time: Dawn.
Incense: Lavender, narcissus and broom.
Celtic God form: Talisein.