def migratoryBirds(arr):
    num1, num2, num3, num4, num5 = 0, 0, 0, 0, 0
    for i in arr:
        if i == 1: num1 +=1
        elif i == 2: num2 +=1
        elif i == 3: num3 +=1
        elif i == 4: num4 +=1
        else: num5 +=1
    tmp = [num1 ,num2, num3, num4, num5]
    return tmp.index(max(tmp)) + 1