I know wasting my breath, but I fired all the images of your tern into PictureBird and it says Common Tern for each, which coincides with what everyone else was telling you.
Additionally as I said before, PictureBird identified all photos of your buzzard as Common Buzzard.
The AI apps are not that reliable, but they are getting better.
When the apps consistently suggest the most common option across multiple images, there's a very high chance it's got it right.
It is just tool though to give you an idea.