variable outputs something wrong

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class squirelscript : MonoBehaviour
 {
 
     public GameObject toppoint;
     public GameObject rightbottompoint;
  
     Vector3 middlebottompoint;
     
 
     // Start is called before the first frame update
     void Start()
     {


         Vector3 middlebottompoint = new Vector3(toppoint.transform.position.x, rightbottompoint.transform.position.y);
         
       
     }      
     void OnDrawGizmos()
     {
     
         Debug.Log(middlebottompoint);
        // the above logs (0,0,0)


         Debug.Log(new Vector3(toppoint.transform.position.x, rightbottompoint.transform.position.y));
         // the above logis middlebottompoint written out but it logs  (0,-4.4,0)


      // THESE 2 logs are supposed to be the same why are they not?
     }
 }