Diffrend mirroring

I’m currenty trying to create a bird. However this bird has to be symetrical. So I selected the x mirror modifier. However this resulted in the bird being mirrored in the x axis while it’s build around the y axis. Is there an easy way to set an y mirroring modifier?

Oh and by the way anyone got a good feather tutorial?

The mirror-modifier has options. Change it from x to y.

The mirror modifier is the one in the modifiers-tab, not the one in the toolbar.