Hey John...... I believe the feeder you have is called a 'Looker'. (Looker, Inc., - Looker.com) I've had one for years and have very good success feeding bluebirds. Like you, I've tried the Bluebird Nuggets. I've never observed a bluebird eating them at all. Perhaps others have...???
I feed Bluebirds using one of those 'Looker' feeders. I use mealworms. Bluebirds love 'em, especially during cold weather. The Bluebirds also supplement the diets of their nestlings with the mealworms. (A vital, quite likely lifesaving, process especially during the cold, wet weather often encountered during the early weeks of the nesting season, when natural food is scarce, or non-existent...!! )
I place the mealworms into small, plastic 'Frozen Vegetable' dishes, set inside the Looker. I've gone to the trouble of subdividing the dish into three sections (Glue & Small pieces of cedar shingles). I place the mealworms into the center section. That prevents starlings from stretching their necks into the Looker and grabbing the mealworms.
I've had Bluebirds ( 5 or 6 ) with me thru the past winter. There are only two now. They've selected a nestbox perhaps 50 feet from my house. Mrs Bluebird has, just today, put the finishing touches on her 1st nest. We expect her 1st egg in a day or two.
Thank you for caring about our Easter Bluebird population. They really need our help.
Bruce Macd.... SW Ontario, near the N Shore of Lake Erie, 26 mi. S. of Detroit
---- Original Message ---- From: \John Gannon\ (via birders Mailing List) <birders...> To: birders <birders...> Sent: Wed, Mar 29, 2017 9:46 am Subject: [birders] OT: Bird feeder advice
I bought years ago one of those bluebird feeders with the side windows with entry holes on each end. I stocked it with bluebird nuggets during winter seasons and never once saw a bluebird use the feeder, even though bluebirds are in my yard occasionally all winter long on clear, calm days. They are always high on tree tops, so I got the feeder to try and lure them closer for better viewing. I was going through things in my garage with aim to get rid of stuff I am not using anymore and this feeder is a candidate. Has anyone had success with this kind of feeder for bluebirds or re-purposing the feeder using other foods for other species of birds? Thanks, John Dexter Twp.