Best birthday ever?!

Gwen Stefani's son Kingston Rossdale marked his 10th birthday with an outdoor adventure-filled weekend chock-full of fishing, four-wheeling and frog-catching at what appears to be Blake Shelton's Oklahoma ranch. The next day, he even got to go on a helicopter ride!

"We're out here celebrating the King's 10th birthday!" a beaming, camouflage-clad Gwen sings to the camera in a Snapchat video she posted on May 27.

More photos and videos of Gwen, Kingston -- whose actual b-day was on May 26 -- and his little brothers Zuma, 7, and Apollo, 2, enjoying the down-home birthday celebration appeared on Gwen's Snapchat throughout the day. They were also posted on the fan-run Twitter feed @gwensnapchats.

In another clip, Kingston and Zuma -- who are both dressed in head-to-toe camo gear -- fish in a lake.

In yet another, Kingston holds onto a giant black frog as he and Gwen stroke it, with Gwen even busting out some baby talk for the amphibian, saying "Look at that little guy!"

The "Go Ahead and Break My Heart" singer also highlighted the birthday adventures with her eldest son when they went for a drive in a four-wheeler. "Happy birthday, King King!" she says in yet another video as the race down a dirt road.

Youngest son Apollo also makes an appearance in a sweet snapshot that shows him playing in a sandbox.

On May 28, Gwen's boyfriend Blake finally popped up on Kingston's b-day weekend Snapchat footage. After sharing a pic of Kingston inside a plane, Gwen tells the camera, "We are about ready to go see some music."

Then she, Blake and Kingston can be seen flying in a helicopter, presumably to Blake's Legends Day concert at the Indianapolis Motor Speedway in Indiana.

Blake previously hosted Gwen and her boys -- as well as Gwen's brother Todd plus his wife and kids -- at his sprawling Oklahoma ranch over spring break, where they colored Easter eggs, watched fireworks and explored the woods.

Kingston's birthday trip follows reports that surfaced earlier this week claiming Gwen's ex Gavin Rossdale is concerned about how close his sons are growing to Blake.

Gwen and Gavin had a recent "emotional" meeting to discuss their custody situation and the role Blake will play in their children's lives, Us Weekly reported.

A source told the magazine that the Bush frontman "wants to be consulted on everything concerning the kids and the role that Blake is playing in their lives."

Two weeks after Blake's divorce from Miranda Lambert was finalized in July 2015, Gwen and Gavin filed divorce papers to end their nearly 13-year marriage.

Just a few months later, reports that Gavin had cheated on his partner of two decades with their sons' nanny made headlines, just as Gwen and her "The Voice" co-star Blake's unexpected romance started to heat up.