The Red Knot makes one of the longest migrations of any bird — traveling up to 9,300 miles twice a year between the Canadian arctic and Tierra del Fuego. Delaware Bay is a critical stopover where knots gorge on horseshoe crab eggs in May, doubling their body weight in two weeks. Declining horseshoe crab populations have caused serious declines in Red Knot numbers.
Best time to see a Red Knot
The best time to see a Red Knot is April–September, when about 61% of U.S. sightings happen, based on 4,707 research-grade iNaturalist observations.
Not certain it is a Red Knot? What bird is this? walks through what to check first and the lookalikes that catch people out.
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