How do you trill a D flat on piccolo/flute?

Question

They key has four flats (B flat, E flat, A flat, and D flat).

I want to trill Dflat 6.

I think it would be a Dflat/C sharp to Eflat trill?

What fingerings are used for that?

Answer 1

There are two ways I would approach this.

1. One way would be to hold your right hand in the position of how you would play and Eb - 4 fingers down. Keep them down as you play a Db/C# with no fingers of your left hand. As you trill, drop your middle finger, ring finger and thumb (like a grabbing motion). Continue to do this back and forth to produce a trill.
2. The other way is to use the button on your right hand between the E and F pads.- is it the button used for high B.

The first way would be the best sounding one.