January 2009. Reviews say that the Droll Yankee Whipper is an excellent bird feeder, designed especially for cardinals. Experts say cardinals have difficulty with the straight perches on ordinary tube feeders because they have shorter necks that don't turn easily and bigger feet than other songbirds. While the Brome Squirrel Buster Plus (*est. $75) has a detachable perch ring for cardinals, reviews say the curved perches of the Whipper accommodate cardinals perfectly and are individually calibrated to collapse when anything heavier hops on. This feeder is 21" long, has four ports, and holds four quarts of seed.
We found the best information about the Droll Yankee Whipper at Bird-Feeder-And-Bird-House-Guide.com, Ezinearticles.com, and Squidoo.com. A handful of owners at Amazon.com give this feeder high ratings.
This helpful guide analyzes the strengths and weaknesses of nine squirrel-proof feeders, including four "very effective" tube-style feeders from Droll Yankee. The author explains why these feeders work and which birds each model is meant to attract.
Review: The Squirrel Proof Bird Feeder, Robert Kegebein, 2007
This well-written article considers bird feeders from the cardinal's point of view. While recommending hopper and fly-through platform feeders, he also compares two squirrel-proof tube feeders with perches designed for cardinals: the Droll Yankee Whipper and the Brome Squirrel Buster Plus.
Review: The Cardinal Bird Feeder -- What Works Best?, Robert Kegebein, Nov. 15, 2007
3. The Best Bird Feeders: A Buyer's Guide
While praising all four Droll Yankee squirrel-proof tube feeders, the author names the Whipper as her top pick, followed by the Tipper and the Dipper.
Review: Best Feeders, Nancy Dowling, aka: The Curious Wren, Aug. 2008
Eight owners give this bird feeder very high average ratings. All of them like it, although one reports that grackles are able to use it, and one describes how a squirrel managed to outwit it.
Review: Droll Yankees YCPW180 Whipper Bird Feeder, Dark Blue, Contributors to Amazon.com