This
Kestrel in F# goes well with the Golden Eagle F#. It has a leather strap over the third hole and can therefore be played pentatonically; if you remove the strap (between the holes) it has a full chromatic scale.
Tuning: F# minor - 6 holes
Wood: Walnut
Length 38 cm, ∅ 2.5 cm, incl. English instructions