3 wooden whistles : – Wooden Slide Whistle: wooden recorder-type whistle with a slide to make the tone higher or lower, allowing all sorts of weird and wonderful noises to be made. 16cm. + -Train Whistle: Great fun for kids and adults Extremely lightweight and built to last, Ideal for school productions and general sound effect use Measures 20.3cm length by 3.2cm width by 3.2cm depth. + -Cuckoo whistle cuckoo calls from the forest! Or even from the nursery. Because with the flute you can imitate the bird call.