Peterson Field Guide to Birds of North America Feature_Squirrel-proof Sealed ball bearings are used

Sealed ball bearings are used in our windcups to keep them spinning freely with even the slightest breeze

The seed hoop catches up to 90% of spilled seed and protects your lawn and garden by preventing rotting seeds

Securely held on window by 2 strong suction cups

a continuous perch for conserving energy and viewing pleasure

Wire is 1 1/2 x 1 1/2

Peterson Field Guide to Birds of North America Feature_Squirrel-proof Sealed ball bearings are usedIn celebration of the centennial of Roger Tory Peterson's birth comes a historic collaboration among renowned birding experts and artists to preserve and enhance the Peterson legacy. This new book combines the Peterson Field Guide to Eastern Birds and Peterson Field Guide to Western Birds into one volume, filled with accessible, concise information and including almost three hours of video podcasts to make bird watching even easier. 40 new paintings