| 摘要 |
<p>A deterrent device which comprises: a base fastenable to a substrate from which flying animals are to be deterred; a spigot detachably connected to the base; a rotor assembly arranged on the spigot and rotatable with respect to the spigot; a releasable retaining arrangement on the spigot and rotor assembly to retain the rotor assembly on the spigot while permitting rotation of the rotor assembly with respect to the spigot; at least one pair of arms extending from the rotor assembly; and a vane arranged on each arm, the spigot and rotor assembly being configured so that the spigot, arms and vanes rotate in the presence of air movement.</p> |
