diff --git a/exercises/concept/bird-watcher/.docs/introduction.md b/exercises/concept/bird-watcher/.docs/introduction.md
index c6b28b3c9..a8f2eba0e 100755
--- a/exercises/concept/bird-watcher/.docs/introduction.md
+++ b/exercises/concept/bird-watcher/.docs/introduction.md
@@ -6,7 +6,7 @@ A `vector` in Clojure is a sequential, indexed, immutable collection of zero or
 (def empty [])
 (def single-value [5])
 (def single-value-alternative (vector 5))
-(def three-values [a b c])
+(def three-values [1 "a" "b"])
 ```
 
 Elements can be retrieved from a vector using an index. Clojure vectors are zero-based, meaning that the first element's index is always zero: