Blake Shelton turns 42 on Monday (June 18), and he seems pretty proud of his gift from girlfriend Gwen Stefani: an American flag on a newly-installed pole.

The singer's birthday festivities started over the weekend when he spent Father's Day with Gwen Stefani, her three kids and extended family, barbecuing, listening to music and swimming. All of the fun was captured and shared via pop star Stefani's Instagram Stories. Shelton could be seen playing Alabama's "Dixieland Delight" on guitar before blowing out his birthday candles, and Stefani shared a video of the occasion with a close-up shot of the birthday boy himself.

"Bday weekend has begun!!" she captioned the clip before singing, "Happy birthday dear Blakey!"

Back home in Oklahoma on Monday, Stefani took Shelton up in a helicopter in hopes he could spot his birthday present from the sky. "Do you see anything different?" she asked as the propeller whirled. He did — he noticed the American flag flying high, and the couple snapped a selfie in front of the big birthday surprise once back on the ground.

Stefani and Shelton have had a jam-packed summer together attending weddings and enjoying some down time with the pop star's kids. On June 2, they went down to Texas for a wedding at the River Ranch Stockyards in Forth Worth. That was just the beginning of their fun-filled weekend though as the next day, Shelton and Stefani enjoyed some time on the water with friends and family, including the singer's kids.

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