Navigating to controllers in separate storyboards

InitialiController.swift

@IBAction func onViewTimelinePressed(sender: UIButton)
{
    var storyboard = UIStoryboard(name: "timeline", bundle: nil)
    var controller = storyboard.instantiateViewControllerWithIdentifier("InitialController") as UIViewController
    
    self.presentViewController(controller, animated: true, completion: nil)
}

@IBAction func onFriendsViewPressed(sender: UIButton)
{
    var storyboard = UIStoryboard(name: "friends", bundle: nil)
    var controller = storyboard.instantiateViewControllerWithIdentifier("InitialController") as UIViewController
    
    self.presentViewController(controller, animated: true, completion: nil)
}

@IBAction func onLoginPressed(sender: UIButton)
{
    var storyboard = UIStoryboard(name: "login", bundle: nil)
    var controller = storyboard.instantiateViewControllerWithIdentifier("InitialController") as UIViewController
    
    self.presentViewController(controller, animated: true, completion: nil)
}