Spawning Actors Question

motorcycle boy

I'm still figuring out how to do this, so thought I'd see if anyone here has the answer. I was playing a game called "Flappy Fall" and wanted to recreate the way the bird is spawned. I noticed that the bird is spawned off screen at the top of the screen. Multiple birds are spawned one after another at a quick rate. It's not quite a random spawn because there is a wave of birds spawned one after another to the left then it goes to the right. I know how to spawn actors randomly but not so that they spawn one after another on the X axis one way and then the other. Does anyone know how to code this?

motorcycle boy

Well I think I thought of a pretty simple solution if there's anyone who cares out there!
Simply have an actor patrol across the top back and forth non stop; set the other actor to spawn every ______ seconds. Easy peasy!