All events
Slaughter Beach, Delaware · Every May to June
Horseshoe crab spawning and red knots on Delaware Bay
Ancient horseshoe crabs carpet the beaches on spring tides and a threatened bird arrives to feast.
215 days until the next window
What happens when you set this watch
We track every fare from your airport into Philadelphia, Wilmington or Washington, D.C. for May 10 to June 10, 2027, round trips of 2 to 3 nights, across every airline. The moment one drops, you get one email with the dates, the price and a link to book. Free, and you can stop any time.
Know before you go
- Check the tide tables and go the evening of a full or new moon
- Do not flip crabs by their tails, use the shell edge if you help one back to the water
- The bayshore beaches are about 90 minutes south of Philadelphia by car; there is no public transport.
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Slaughter Beach, Delaware · Every May to June
Horseshoe crab spawning and red knots on Delaware Bay
Ancient horseshoe crabs carpet the beaches on spring tides and a threatened bird arrives to feast.
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Puno Week and the arrival of Manco Cápac
The first Inca rises from Lake Titicaca on a reed boat and is carried through Puno by hundreds of dancers.
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Koshi Tappu winter migration
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