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But, I give me out, our birds will most like the usual birdhouse.
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Material: Any boards (except for coniferous breeds) thickness necessarily at least 20 mm. The inner surface must be uneven.
The sizes of the birdhouse: the bottom is certainly square and about 10x10 cm or 12x12 cm. The height of the side walls of the birdhouse is about 25-40 cm. And the diameter, the so-called, the flyer is 3-5 cm. And no paints, varnishes and other chemicals.
Please note: the house does not do too spacious! And also to protect well from our favorite, but cunning cats.
Placing a birdhouse: on any deciduous tree, and approximately height from 3 meters, of course, in a vertical position, and quite far from various hanging branches, be sure to South. If there are no high trees on the site, you can simply strengthen the nesting book on a rather strong three-meter pole.
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A source