On the sandy beaches of the Delaware Bay, in New Jersey, a visitor arrives each May from the southernmost tip of South America. Name: Calidris canutus rufa. The rufa red knot. For two crucial weeks, the birds gorge on the eggs of horseshoe...See moreOn the sandy beaches of the Delaware Bay, in New Jersey, a visitor arrives each May from the southernmost tip of South America. Name: Calidris canutus rufa. The rufa red knot. For two crucial weeks, the birds gorge on the eggs of horseshoe crabs. Red knots that gain enough weight will survive the final leg of their journey to the Arctic. Others perish.
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