Chickadee Birdhouse

# Black-Capped Chickadee Birdhouse — Printable Two-Piece DesignA dimensionally accurate birdhouse sized specifically for black-capped chickadees (*Poecile atricapillus*), based on Cornell Lab of Ornithology and North American Bluebird Society guidelines. Prints in two separate pieces — a floor-down box and a peak-up roof — that lock together via integrated tabs.---## Features**Box**- 101 × 101 mm interior floor, 220 mm interior height- 28 mm entrance hole centered on the front wall, 175 mm above the floor (~6.9 inches) — deep enough to deter predators, right in the recommended range for chickadees- 27 horizontal climbing grooves on the inside of the front wall below the entrance hole, so fledglings can grip and scramble out- 4 × 6 mm drainage holes near the floor corners- 2 × ventilation slots (15 × 5 mm) near the top of each side wall- Keyhole-style mounting slot (8 × 30 mm) centered on the back panel, 20 mm from the top — slides over a screw head for tool-free installation- Two roof-