diff --git a/experiments/flocking/main.go b/experiments/flocking/main.go
new file mode 100644
index 0000000..271cfa4
--- /dev/null
+++ b/experiments/flocking/main.go
@@ -0,0 +1 @@
+package flocking
diff --git a/experiments/predatorprey/README.md b/experiments/predatorprey/README.md
index 1bbfe6c..f70084a 100644
--- a/experiments/predatorprey/README.md
+++ b/experiments/predatorprey/README.md
@@ -2,4 +2,4 @@
 
 Models interactions between prey who eat grass, and predators who eat prey.
 
-![](graph.png)
+![](oscillations.png)
diff --git a/experiments/predatorprey/graph.png b/experiments/predatorprey/graph.png
deleted file mode 100644
index 4383c0d..0000000
Binary files a/experiments/predatorprey/graph.png and /dev/null differ
diff --git a/experiments/predatorprey/oscillations.png b/experiments/predatorprey/oscillations.png
new file mode 100644
index 0000000..e4bc511
Binary files /dev/null and b/experiments/predatorprey/oscillations.png differ