Bird question

I was curious if any of you might know the answer to the question below:

There's a song bird around here that sings a perfect major chord. Like
this:

5 3 3 pause 5 3 3 3 1

You are the only person in the world who might be able to identify the bird
with this info. What is it?

> I was curious if any of you might know the answer to the question below:
>
> There's a song bird around here that sings a perfect major chord. Like
> this:
>
> 5 3 3 pause 5 3 3 3 1

I need to know first where 'around here' is, before I start thinking about
it. Unless it is northeastern North America, I will probably have to get
out reference books.

Best,
Judy