摘要 |
<p>A bird feeder 10 which comprises a body 12, at least part of which is substantially cylindrical and has one or more apertures 14, 16, 18, . The bird feeder further comprises a substantially cylindrical dispensing sleeve 20, 22, 24, dimensioned to fit around the cylindrical part of the body, the dispensing sleeve having one or more apertures 26 28 30 and being rotatable about the body to control an amount of overlap between an aperture in the body and an aperture in the dispensing sleeve to adjust the size of an effective aperture from the inside of the body to the outside of the dispensing sleeve. The aperture in the body and the aperture in the dispensing sleeve are both shaped such that when the dispensing sleeve is rotated about the body, the size of the effective aperture changes but the shape of the effective aperture remains substantially the same. The bird feeder may be provided with a utility sleeve that fits around the body and rests against the upper edge of a dispensing sleeve or another utility sleeve. The utility sleeve may comprise a tray (52 figure 3) or perch ring (54 figure 3)</p> |