Schwegler 1B bird box

Nest Box 1B
 
The internal diameter of this nest box is 12 cm. It is usually attached to a tree using the aluminium nail provided. It can also be hung from a branch. The front panels, which can be bought separately, are interchangeable between model 1B, 2M and 2F, and can easily be removed from the nest box. Different size entrance hole widths have been created to avoid competition between the birds. The nest boxes are always delivered complete with hanger and special aluminium nail.
Also available with front panel for protection against martens.
 
Material: SCHWEGLER Wood-Concrete Nest Box. Hanger: steel, galvanised.
External Dimensions: W 17 x H 26 x D 18 cm.
Internal Diameter: ∅ 12 cm.
Weight: approx. 3.6 kg.
Includes: Nest box, hanger and aluminium nail.
 
These nests are available in 4 different colours:
brown, white, red and green
 
Available entrance hole sizes:
• ∅ 32 mm
• ∅ 26 mm
• oval 29 x 55 mm
 
Entrance hole 32 mm:
Occupants: Great, blue, marsh, coal and crested tits, redstarts, nuthatches, collared and pied flycatchers, tree and house sparrows.
Order No. 00 102/3
Entrance hole 26 mm:
Occupants: blue, marsh, coal and crested tits. All other species are prevented from using the nest box due to this smaller entrance hole.
Order No. 00 105/4
Entrance hole oval (29 x 55):
Occupants: Redstarts. Also used by species that nest in the ∅ 32 mm boxes. However, because more light enters the brood chamber, it is preferred by redstarts.
Order No. 00 108/5