TOLEDO (WTOL) - We are one week away from welcoming thousands of bird enthusiasts to northwest Ohio as the 10th annual “Biggest Week in American Birding” begins on Friday, May 3.

The song bird watching event has grown to become a major draw across the world.

Ninety thousand visitors are expected this year along the Lake Erie shore to see migratory warblers as they rest before making the trek across the lake.

Multiple organizations will be hosting various events all week long all along the coast.

To date, the event has hosted people from all 50 states, 52 countries and six continents.

Organizers said the biggest week generates up to 42 million dollars for the regional economy.

But it’s not just for out-of-towners, the Black Swamp Bird Observatory, headquartered at Magee Marsh in Ottawa County, also works to make sure local northwestern Ohioans are also taking part in the bird watching opportunity.

“We offer a whole host of free birding experiences. If you’ve never tried birding, but you’re kind of intrigued by it; you can come out with some of the nicest and most knowledgeable birders who will teach you everything you need to know about how to get started in birding,” Kimberly Kaufman, executive director of the Black Swamp Bird Observatory, said.

Because of the ever increasing number of visitors, the parking lot of the BSBO has been expanded this week to accommodate more visitors at their headquarters and their “Optics Alley”

“So, our great partners at the Ohio Division of Wildlife are out expanding our parking lot. So more people can get in here and experience optics alley, and everything that the bird observatory has to offer during ‘Biggest Week’,” Kaufman said.

Click here for more information on the Biggest Week in American Birding.