diff --git a/oop/code/oop/src/main/java/com/scaler/lld/bird/Bird.java b/oop/code/oop/src/main/java/com/scaler/lld/bird/Bird.java
index b6a014c..a9d6488 100644
--- a/oop/code/oop/src/main/java/com/scaler/lld/bird/Bird.java
+++ b/oop/code/oop/src/main/java/com/scaler/lld/bird/Bird.java
@@ -5,20 +5,12 @@ import lombok.Getter;
 
 @AllArgsConstructor
 @Getter
-public class Bird {
+public abstract class Bird {
     private Integer weight;
     private String colour;
     private String size;
     private String beakType;
     private BirdType type;
 
-    public void fly() {
-        if (type == BirdType.Eagle) {
-            System.out.println("Eagle is flying");
-        } else if (type == BirdType.Penguin) {
-            System.out.println("Penguin is swimming");
-        } else if (type == BirdType.Parrot) {
-            System.out.println("Parrot is flying");
-        }
-    }
+    public abstract void fly();
 }
diff --git a/oop/code/oop/src/main/java/com/scaler/lld/bird/Eagle.java b/oop/code/oop/src/main/java/com/scaler/lld/bird/Eagle.java
new file mode 100644
index 0000000..0ed2b4d
--- /dev/null
+++ b/oop/code/oop/src/main/java/com/scaler/lld/bird/Eagle.java
@@ -0,0 +1,14 @@
+package com.scaler.lld.bird;
+
+public class Eagle extends Bird {
+
+    public Eagle(Integer weight, String colour, String size, String beakType, BirdType type) {
+        super(weight, colour, size, beakType, type);
+    }
+
+    @Override
+    public void fly() {
+        System.out.println("\nEagle is flying");
+    }
+    
+}
diff --git a/oop/code/oop/src/main/java/com/scaler/lld/bird/Parrot.java b/oop/code/oop/src/main/java/com/scaler/lld/bird/Parrot.java
new file mode 100644
index 0000000..a3eae19
--- /dev/null
+++ b/oop/code/oop/src/main/java/com/scaler/lld/bird/Parrot.java
@@ -0,0 +1,14 @@
+package com.scaler.lld.bird;
+
+public class Parrot extends Bird {
+
+    public Parrot(Integer weight, String colour, String size, String beakType, BirdType type) {
+        super(weight, colour, size, beakType, type);
+    }
+
+    @Override
+    public void fly() {
+        System.out.println("\nParrot is flying");
+    }
+    
+}
diff --git a/oop/code/oop/src/main/java/com/scaler/lld/bird/Runner.java b/oop/code/oop/src/main/java/com/scaler/lld/bird/Runner.java
new file mode 100644
index 0000000..4ad2196
--- /dev/null
+++ b/oop/code/oop/src/main/java/com/scaler/lld/bird/Runner.java
@@ -0,0 +1,11 @@
+package com.scaler.lld.bird;
+
+public class Runner {
+    public static void main(String[] args) {
+        Bird parrot = new Parrot(10, "Green", "Small", "Sharp", BirdType.Parrot);
+        parrot.fly();
+
+        Bird eagle = new Eagle(20, "Brown", "Medium", "Sharp", BirdType.Eagle);
+        eagle.fly();
+    }
+}