Bird Address Stamp - Birdhouse Branch Stamp - Custom Bird Stamp Bird Address Stamp - Birdhouse Branch Stamp - Custom Bird Stamp Customization Instructions: Click on 'Customize Now' on the right and follow instructions. Custom Return Address Stamp is self inking. Impression can last for up to one thousand impressions before being re-inked. Custom Address Stamp impression is approximately .875" x 2.3". All orders are made to order. Most orders ship within 24 business hours of your order being received.