After Labor Day last season, I sailed up to six Loons off Rattlesnake Island and started a 15-minute video. (Hopefully to record their sometimes-comical behavior
).
The following is a short, 26-second section of that video. Pardon the video's "seasick" motions—it's in telephoto mode, and hard to hold steady—especially while afloat.
One Loon gave the "threat" pose (extreme left in the video) but it didn't dawn on me to consider what that "threat" could be.
https://www.youtube.com/watch?v=2ZkHRnPmaRI
Interesting Yellow-Billed Loon video, vocalizing with the same calls as Winnipesaukee Loons.
https://www.youtube.com/watch?v=kyRTu-VJM1Q