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Bomb Island
Lake Murray, SC
People stand on a boat deck at sunset, watching a flock of Purple Martins in the sky during the Purple Martin Phenomenon. The calm water reflects the evening light, and other boats are visible in the distance. A Purple Martin bird with grey and black feathers is captured mid-flight against a clear blue sky, wings fully extended. A group of people ride a pontoon boat on Lake Murray surrounded by dense trees at dusk. The sky is filled with Purple Martin birds in flight. A male Purple Martin bird perches inside a hole of a large, weathered, white gourd birdhouse with rusty spots. Other similar birdhouses hang in the background against a clear blue sky. A small, male Purple Martin bird perched on a rusty, twisted wire fence with a grassy background, under light rain. A large flock of Purple Martins fly across a blue sky at sunset during the Purple Martin Phenomenon, with scattered clouds and silhouettes of trees below.

About the Purple Martin Phenomenon

At night, the Purple Martins take flight! Each summer, the skies over Bomb Island on Lake Murray come to life as the Purple Martins arrive for their summer vacation in what’s known as the Purple Martin Phenomenon. It’s estimated that over one million birds venture north for the summer to roost on the island, giving spectators a rare look at one of nature’s true phenomenons. Bomb Island is the largest Purple Martin roosting site in North America and provides the perfect place for the birds to rest and prepare for their journey back to South America for the winter. Every day at dawn and dusk, millions of these birds take flight during this natural phenomenon.

When is the best time of year to see Purple Martins?

The best time to see the Purple Martin Phenomenon is from late June through early August, with the highest number of birds appearing from mid-to-late July. You can catch the birds at two key times each day—early in the morning and at dusk. Local weather forecasters have reported that the bird’s morning migration is so large, that its radar image is larger than Hurricane Hugo!

Where does this phenomenon take place?

This one-of-a-kind birding event happens at Bomb Island, located on beautiful Lake Murray in South Carolina.

How can you see the birds?

The best way to see the Purple Martin Phenomenon is by boat! You can rent a boat from various rental spots around Lake Murray or book a private tour.


John Tjaarda, local birding expert and 2024-25 CCLMC Ambassador, shares his thoughts on Purple Martins and the importance of conservation.

Why care about Purple Martins?

Purple Martins, like many native species of birds, are currently in decline. In fact, according to the Purple Martin Conservation Association, their population has dropped 24.1% over the last 55 years. This is partially attributed to habitat loss and competition for housing with non-native species like European Starlings. Purple Martins are part of our greater ecosystem and help keep local insect populations in control since bugs are the main part of their diet! 

How can I help?

Purple Martins almost completely rely on non-natural cavities to nest during the summer. You can help most by installing Purple Martin gourds or birdhouses in your yard. Visit your local bird center or website to learn more about how you can help this species thrive! 


Book a Purple Martin tour!

Whether you’re a local or visiting from out of town, this incredible phenomenon is a must see. Create lasting memories on a Purple Martin boat tour with any of Lake Murray’s experienced captains; most tours last around two hours.

Carolina Safari Co. – Captain Zach Steinhauser
📍 Wingard’s Market | 1403 N. Lake Drive, Lexington, SC 29072
📞 (803) 359-9091
🌐 carolinasafarico.com/lake-murray-purple-martin-tours
📧 [email protected]

Captain Kenny Hardee
📍 Pontoon Rentals & Tours | 220 Jakes Landing Road, Lexington, SC 29072
📞 (803) 530-3713
🌐 lake-murray-boat-rentals.com

Captain Ben Stickney
📍 Pilot Cove Ventures – Sailboat and PowerBoat Tours | 130 Amicks Ferry Rd, Chapin, SC 29036
📞 (803) 969-0105
🌐 pilotcoveventures.com
📧 [email protected]

Spirit of Lake Murray – Purple Martin Cruises
📍 Spirit of Lake Murray | 216 Shadowood Drive, Irmo, SC 29063
📞 (803) 250-5497
🌐 spiritoflakemurray.com
📧 [email protected]

Captain Rick Crout
📍 Captain Hook’s Lake Murray Tours
📞 (803) 603-1142
🌐 captainhookstours.com
📧 [email protected]

Captain Dale Gossett
📍 Lake Murray Island Tours
📞 (803) 318-3911
🌐 lakemurrayislandtours.com
📧 [email protected]


Experience the awe-inspiring Purple Martin Phenomenon at Bomb Island on Lake Murray, South Carolina! This must-see event is truly astonishing and should definitely be added to your bucket list – if it’s not on there already! During your visit, make sure to check out our local restaurants, attractions, and accommodations to make the most of your Lake Murray Country adventure!

Photo Credit: Bill Barley (photo 1 & 5), Zach Steinhauser (photos 2-3), John Tjaarda (photos 4-6).

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