The 3SV has a deeper entrance hole to provide protection from cats and martens. This design has proved highly effective. The brood chamber is still visible, making it easy to check inside and to clean.
The predator-proof "Starling Box", in which the brood chamber has also been enlarged to 14 cm. With its protruding entrance hole this model provides very good protection against Cats and Martens. However, the view into the brood chamber is not obscured, and this is a major advantage when checking and cleaning the box. With its smaller diameter entrance hole the 3SV nest box has proved very effective for other species too. For example its large interior brood chamber and the shape of the floor make it very popular with Wrynecks.
Entrance hole: 45 mm, oval 32 x 45 mm and 34 mm diameter.
Material: SCHWEGLER Woodcrete Nest Box.
Hanger: steel, galvanised.
Ext. dim.: 19W x 28H x 23D cm.
Interior nesting chamber: 14 cm diameter.
Weight: approx. 4.8 kg.
Includes: Nest box, hanger and aluminium nail.
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