UK Native Crow Call Bionic Replication

12 cm × 3 cm in size. Built from rigid polypropylene (PP) plastic — lightweight for mobility, yet structurally stable for consistent acoustic output over time. Features bionic sound generation that reproduces the nuanced vocalisations of two UK-native corvids: the carrion crow (Corvus corone) and the rook (Corvus frugilegus). Accurately renders alarm, contact, and assembly calls using only human breath — zero electronics or power required. Developed for ecological surveyors, smallholders managing crop protection, educators delivering outdoor curriculum content, and practitioners of traditional UK fieldcraft. Designed to be used in accordance with recognised countryside access principles — especially respecting nesting season protocols and distance thresholds near active sites.