Droll Yankees CC18N Onyx Clever Clean Fdr 18 Inch Clever clean twist release base-for quick and easy clean out to help maintain the health of Birds. Comfort perches-multiple landing areas to accommodate numerous Bird species and their preferences. Two-part perch design-a patented engineering feature that locks the port in place. Port configuration-permits unimpeded seed flow. Open interior-easy cleaning with the droll yankees Bird feeder brush (bfb 24 ). Color: Black. Size: 18 .