Naturally those thunder eagles didn't notice and because of that they were just busy with their own work. Right now those Monsters are looking around their territory and if they find any enemy that enters their territory they will immediately attack that enemy. Naturally they did not like anyone to enter their territory so if anyone decided to do that, naturally they would get attacked by those thunder eagles.
Now back to the main matter, Alex controls the avatar to silently follow those Monsters and it looks like those Monsters weren't planning to go to them right now. But he still did not leave those monsters and just silently followed them. One thing he was sure of was that to fight those Monsters he cannot use the thunder elements because those monsters naturally have affinity with the thunder element and because of that they will not receive that much damage if he uses the thunder element.