This revised version incorporates new information that has evolved during the past 10 years so you can have the best chance possible of helping wildlife with your own nest-building efforts.
Nest boxes are becoming increasingly important as intensifying forest management and firewood cutting reduce the availability of natural cavities. Nest boxes are therefore helpful for many cavity nesting species.
Nest boxes and structures for raptors include:
Numerous color photos and designs throughout.
by Minnesota Department of Natural Resources---1992---Soft cover 111pp,
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