Whistle Hoot, Bird Call Impression, Cupped Hand Whistling, Male, Single and Multiple Blasts, Various, CU, Breathy Pipe Tone, Toot, Signal, Surveillance, Hunting, Stalking, Forest, Many Versions

Whistle Call, Gang Members Signal, Short Tonal Blasts, Male, Various, CU, Street Gangs Whistling, Get Attention, Take Action, Urban, Many Versions

Whistles, Human, Wolf Call, Various Versions

Group Whistling, Constant, Few People Blowing Random Melodies, Cheering on Baseball Game

Train Steam, Whistle Scream, Shrill Toot, CU, Single, Hunting, Resonant

Referee Whistle, Interior Gymnasium, Short Blows, Very Reverberant, Varied Intensity, Many Versions

Whizzer Whistle, Breathy, Short Bursts, Many Versions

Police Whistle, Various Toots, Short Pulses at Head, Harsh Screeching Tone, Many Versions

HMS Belfast Royal Navy Cruiser Ship, Group Whistles, Scattered Blows, Echo Short Bursts, Right

Bosun Pipe, Whistle, Call, All Still