1、STRONG SUCTION CUP: Comes with 4 strong suction cups, this window bird feeder can be securely and stably fixed to the window. 2、REASONABLE DESIGN: Sloping roof and drainage holes preserve food from rain and snow, the bird feeder can withstand various weather conditions. 3、EASY TO CLEAN: You can quickly clean the surface with a wet towel to remove any stain or water marks, and the detachable tray is easy to clean and fill. 4、COMFORTABLE AND SAFE: Considering the safety and comfort of birds, the bird house feeder has enough space to accommodate different types of birds. Rounded corner has no edges or sharply points. 5、PERFECT BIRD HOUSE: Transparent acrylic and central hollow circular window provides close range and more direct viewing.