No mic? These (simulation) demo notes go through the same scoring as a real call.
Every note you finish is compared with measured recordings of a champion caller, using ASCE (Analytic Sound Comparison Engine), built on the patented Animal Call Comparison Tool, U.S. Pat. 12,646,526. A note in the champion’s pitch range, loud enough to carry, brings the flock one step closer. Notes that are too high, too low or too quiet don’t move them, and calling too fast flares them away. Once they are close, go quiet: they settle on the water.
How sharply a note starts is not scored here, because a browser microphone can’t measure it reliably. The demo notes are simulated, and the flock is a training simulation, not a claim about how wild birds behave.