Question 1

The tension doesn't seem to deter rats...I don't know if this can be adjusted...I feel bad for the birds...but I took the feeder down today.

Accepted Answer

I have not had rats try to get the bird seed.  I have had it for 3 years, the spring in the tension got loose after too many squirrel attempts.  What I found is that the cardinal ring weighed it down and the birds could not get to the seed.  The customer care sent me a new spring mechanism and it works great now, ring and all.

Question 2

I need an explanation about adjusting the weight sensitive spring. All I find is to rotate the spring but it does not explain which way does what??

Accepted Answer

Turning clockwise stiffens the spring; counterwise otherwise.  You can also just push down the ring perch and feel the changes in the force needed to close the feeding ports.

Question 3

Male cardinals aren't using the perch. They just sit below the feeder eating off the ground. Female Cardinals use it. Any idea why?

Accepted Answer

I have both male and female cardinals on my feeder all the time.  I was trying to figure out a way to post pictures so you could see.  I'm not sure why they aren't using yours???  If I can figure how to post some pics, I will.  Cardinals love safflowers seeds so I mix them in with the black oil sunflowers seeds.  If you aren't using those, maybe they use my feeder so they can have some of those.  Who knows???  Good luck!

Question 4

How often will I have to refill this feeder on average if I have a fair number of birds in the area and what cost would that entail?

Accepted Answer

Not trying to sound obvious, but it depends on the number and type of birds. My feeders in Houston draw Cardinals, Mockingbirds, Jays and Woodpeckers - hungry birds, plus lots of Sparrows and Carolina threshers. I have to refill the feeder about every 5 days with this crew. My feeder in Brenham also draws lots of birds, but smaller ones, and I only have to refill it every 7-8, sometimes 10 days. In the winter months, it will have to be refilled more often, of course.

Squirrel Buster Plus Squirrel-proof Bird Feeder w/Cardinal Ring and 6 Feeding Ports, 5.1-pound Seed Capacity, Adjustable, Pole-mountable (POLE ADAPTOR SOLD SEPARATELY), Green

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