The hole is the right size for blue birds, finch, cardinals, wren, chickadee and hummingbirds. Good ventilation where it?s required. The painting is good, making this a birdhouse not only good for birds, but also for decor. Perfect blue bird nest box and bird house for yard. 

• Weather Resistant: The bird homes for outside are holding up great, providing a sturdy, dry home for feathered residents. 
• Easy to Display: Garden bird house comes all assembled. It's ready to use right out of the box. 
• Sturdy: Decorative birdhouses for outdoor are 6.5 inches wide and 16.5 inches tall. Made of solid wood, very sturdy. 
• Ideal Gift: Free standing bird houses for outside make a fine gift. Amazing details makes perfect spring decor for your yard. Great birthday gifts, anniversary gifts, Mother's Day gifts and Christmas gifts for loved one.