Justify Your Existence

"Horseshoe Crabs and Migrating Shorebirds" lecture

by Monica Weymouth

What:

Who:

Ruth Pfeffer, expert birder and trip leader

When:

Sun., March 25, 2 p.m., $22-$24

Where:

Morris Arboretum, 100 Northwestern Ave., 215-247-5777

What Makes You So Special:

"Shorebirds travel all the way from Argentina and are dependent on horseshoe crab eggs for survival," explains Pfeffer. "They time their arrival to the Delaware Bay perfectly with the eggs. This happens every single year, and it's a feeding frenzy. It is a true phenomenon. Eighty-eight percent of this horseshoe crab species lives in the Delaware Bay. It's not the prettiest creature, but it's beautiful."