I broke your birds bro.
Great game, amazingly fun for only 3 buttons, but there are several exploits (just letting you know, in case you decide to update it).
1. If you run rapidly back and forth between the two central buildings, (one of which is small, the other is large) you can completely avoid the the birds because the flock's timer resets every time you go through a doorway, which keeps them circling outside one of the buildings indefinitely.
Possible fix: If you rapidly switch directions multiple times, start to drain stamina, with each change in direction from that point becoming exponentially larger.
2. If you stand in the small gap between those same two buildings and time out the [x] action, you can also keep the birds at bay indefinitely.
Possible Fix: Honestly idk, but it's not the most consistent mechanic, so it should be fine :)
To finish it off: I have an Idea for the ending: Implement a timer mechanic, each minute more birds come to join the flock; but at the 5 minute mark, all the birds get cleared away by a passing military helicopter (which you can wave down to you with the [x] key. If they see, the helicopter lands and you military personnel escort you on to it. The end card is the helicopter flying off into the distance, followed by thousands of birds. If the heli doesn't see you, you have to survive another 5 minutes of birds before it comes back.
Overall great game, great execution, and some really cool bird ai. Thanks for the fun <3