Looks like strategically placed treats.
They are obviously eating something. Has he been putting out the treats and playing a tune and conditioning them to associate the tunes with the treats?
Flute as dinner bell. Pavlovian response.
They sort of formed a semi-circle and seemed to be picking up food.
I think they associate the flute playing with being fed.
“Rocky Raccoon”
Now somewhere in the Black Mountain Hills of Dakota
There lived a young boy named Rocky Raccoon
And one day his woman ran off with another guy
Hit young Rocky in the eye Rocky didn’t like that
He said “I’m gonna get that boy”
So one day he walked into town
Booked himself a room in the local saloon
Rocky Raccoon checked into his room
Only to find Gideon’s Bible
Rocky had come, equipped with a gun
To shoot off the legs of his rival
His rival, it seems, had broken his dreams
By stealing the girl of his fancy
Her name was Magill, and she called herself Lil
But everyone knew her as Nancy
Now she and her man, who called himself Dan
Were in the next room at the hoedown
Rocky burst in, and grinning a grin
He said, “Danny boy, this is a showdown”
But Daniel was hot, he drew first and shot
And Rocky collapsed in the corner, ah
D’da d’da d’da da da da
D’da d’da d’da da da da
D’da d’da d’da da d’da d’da d’da d’da
Do do do do do do
D’do d’do d’do do do do
D’do d’do d’do do do do
D’do d’do d’do do do d’do d’do d’do d’do
Do do do do do do
Now, the doctor came in, stinking of gin
And proceeded to lie on the table
He said, “Rocky, you met your match”
And Rocky said, “Doc, it’s only a scratch
And I’ll be better, I’ll be better, Doc, as soon as I am able”
And now Rocky Raccoon, he fell back in his room
Only to find Gideon’s Bible
Gideon checked out and he left it no doubt
To help with good Rocky’s revival, ah
Oh yeah, yeah
D’do d’do d’do do do do
D’do d’do d’do do do do
D’do d’do d’do do do d’do d’do d’do d’do
Do do do do do do
D’do d’do d’do do do do, come on, Rocky boy
D’do d’do d’do do do do, come on, Rocky boy
D’do d’do d’do do do d’do d’do d’do d’do
The story of Rocky there
BS he has trained them with probably cat food, they come a runnin’. I do remember a clip I saw maybe 20 years ago. Chinese man who could go out and call to the birds with his arms outstretched and they would come by many dozens and land on him. No food involved.