Great Horned Owl
Nest structure Plan and Information
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Species in decline
This species is in decline in certain regions. You can put up a nest box to help if you live in the right region and habitat.
- Not declining
- Not present
Nesting RangeSource: Birds of the World
- Open Woodland
Attach Nest Box To
- Live tree
Known Nesting Period
Some Nesting Occurrence
Nesting in Most of Range
Nest Box Placement
- Place nest cones in trees in the fall so they can be located by owls by the following January.
- Place the nest in a live hardwood tree that is at least 12 inches in diameter.
- Placing nest cones in orchards or on farm woodlots can help control rodent populations.
- Construction tips: Use a plant stand with a 12 inch opening to hold the cone during construction. Build a raft-like base at the bottom of the nest cone and secure the base to the sides of the cone with landscaping wire. Create vertical stick spokes (visualize a bike wheel) to use for attaching horizontal sticks. Work your way from the bottom to the top, securing sticks in 6 inch segments with landscaping wire. Add loops to the outside of the cone to aid in installation. Have an arborist install the cone! When Great Horned Owls select a tree as their nest site, they prefer to nest at a height of 15-45 feet; in hardwood trees with at least a 12 inch diameter.