diff --git a/src/main/java/model/Aviary.java b/src/main/java/model/Aviary.java
index 2ed58b3..d9bd6a7 100644
--- a/src/main/java/model/Aviary.java
+++ b/src/main/java/model/Aviary.java
@@ -20,7 +20,7 @@ public class Aviary<A extends Animal>{
         this.size = size;
     }
 
-    private Map<String, A> aviaryMap = new HashMap<>();
+    private HashMap<String, A> aviaryMap = new HashMap<>();
 
     public void addAnimal(A animal){
         if (animal.getSize() != this.size){
@@ -39,7 +39,7 @@ public class Aviary<A extends Animal>{
         return aviaryMap.remove(name, getAnimal(name));
     }
 
-    public Map<String, A> getAviaryMap() {
+    public HashMap<String, A> getAviaryMap() {
         return aviaryMap;
     }