No Maeve, it wasn't a different bird. Not to put a feather in my cap but I really don't have to see many birds any more to identify their songs or calls. The only one that(not really the only one.)still fools me at times is the catbird. They are great at imitating other species. Especially the cat..

Great article by the way. To bad he didn't spend more time explaining his his statement which was: "Expert ventriloquists, they are extremely difficult to locate; a trait
which presumably helps them evade predators." He doesn't mention which bird he was referring to though.
Adrien