Animator is not reacting

Hello,

I'm a beginner with Unity, and i want to create an animation.
I'm following the tutorial "Making a flappy bird style", i'm at part 4 "animating the bird".
I don't know why, i can't see the animation when using the animator in play mode. (i don't see the animation when i use a script neither).

this is how look my animation :




and this is my animator



All my link between bird and any states has a condition and no exit time.
The link between flap and bird has no condition and an exit time :



There is no blue load bar below any state when i use play mode.
can someone explain it to me please ? :s

Thank you

 

Removing and re-adding the animator fixed the problem.