===================================================================
--- original.js
+++ change.js
@@ -10,9 +10,9 @@
 		anchorY: 0.5
 	});
 	self.velocity = 0;
 	self.gravity = 0.5;
-	self.flapStrength = -10;
+	self.flapStrength = -15;
 	self.update = function () {
 		self.velocity += self.gravity;
 		self.y += self.velocity;
 		if (self.y > 2732 - birdGraphics.height / 2) {