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The Science of Your Bird Feeder

Posted January 16, 2015 8:00 AM by SavvyExacta

Winter is a quiet time outdoors in the Northeastern USA, but a bird feeder brings chirping visitors back in the colder months. Feeding the birds is fun and can be as simple as throwing some seed out. But if you'd like to attract certain types of birds, you'll have to get a little more sophisticated. Here's why.

Types of Bird Feeders

Feeder Type

Description

Birds Attracted

Other Animals

Platform An open tray that's either elevated or placed at ground level Sparrows, juncos, doves, jays, blackbirds, sparrows Deer, squirrels, raccoons
Hopper Enclosed feeder that dispenses seed at the bottom Finches, jays, cardinals, buntings, grosbeaks, sparrows, chickadees, titmice Squirrels
Tube Seed is dispensed from small holes in a cylindrical feeder Sparrows, grosbeaks, chickadees, titmice, finches Squirrels
Suet Mesh case or bag Woodpeckers, nuthatches, chickadees, titmice, jays, starlings Squirrels

How the birds eat determines which feeder type works best for them. For example, juncos like to feed at ground level, so a low platform suits them best. They tend to feed in groups and ground feeding makes this easy. Other birds that like to feed in groups are chickadees and nuthatches. Group feeding is common for protection and the opportunity to find food in a common area.

hopper feeder with safflower seed

Wire mesh tube feeders, on the other hand, are good for seed-eating birds that can feed upside down. Finches are comfortable eating at these types of feeders and it can provide them with a source of food where they might otherwise be excluded by larger birds.

Types of Bird Seed

Seed Type

Description

Birds Attracted

Notes

Sunflower Black oil, striped, or shelled Chickadees, titmice, nuthatches, cardinals, grosbeaks, sparrows, woodpeckers, finches Commonly enjoyed by many species
Safflower Shelled Chickadees, titmice, nuthatches, finches, cardinals, grosbeaks May deter squirrels
Corn Cracked Doves, sparrows, jays May attract deer
Peanuts Whole or shelled Cardinals Will attract squirrels
Millet Juncos, sparrows, finches Good for ground feeding
Mixed Millet, corn, sunflower Many feeder birds won't eat millet
Thistle/Niger Small black seeds Goldfinches, indigo buntings Requires a tube feeder
Suet Fat mixed with berries or nuts Woodpeckers, chickadees, titmice, nuthatches, orioles, tanagers Use only in freezing weather

Just as different bird species prefer different feeders, they also have varying preference in seed type. If you are looking for ground feeders like juncos, then millet is the way to go.

The bird's beak can influence what it likes to eat. Some species have special beaks that fit together like a nutcracker. Finches enjoy thistle seeds, which they have to crack open with their beaks. Larger-beaked cardinals are adept at cracking open sunflower seeds.

References

Cornell Lab of Ornithology

Birding.About.com

BirdSource.org

ProjectBeak.org

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#1

Re: The Science of Your Bird Feeder

01/16/2015 9:31 AM

I have several feeders up, year round, and it is indeed wonderful to watch, especially as I work. Squirrels are always a problem around here, so I mix the seed or slime the feeders with hot sauce (birds have no taste receptors for 'heat', but mammals do).

And there is a no-melt, hot pepper-infused suet that I use all year for the same reason. Even the raccoons won't go near it. Unfortunately, the black bears seem to like it, but their visits are relatively rare.

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#2
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Re: The Science of Your Bird Feeder

01/16/2015 12:11 PM

"... so I mix the seed or slime the feeders with hot sauce."

Now that's interesting. So, the birds don't get the sensation of the capsaicinoids as we do, and there is no issue with birdie indigestion that you are aware of?

I like it! I'm going to try it.

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Re: The Science of Your Bird Feeder

01/16/2015 12:25 PM

Nope, I've had no negative reports on Yelp about my offerings, nor read anything that this could be detrimental to birds. Matter 'o fact, I just refilled one of the suet feeders; the woodpeckers and nuthatches are eating me out of house and cr4wlspace.

Another squirrel-repellent trick for feeders on poles: coat the pole with Vaseline or some other slimy substance. The added bonus is watching them slide around (sorry, Kris).

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#5
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Re: The Science of Your Bird Feeder

01/16/2015 2:04 PM

It's more disturbing that there's a suggestion in the table that squibs might be attracted to cardinals !

Lubing the pole might work, but little paws can still get a grib on it. The table needs a large diameter pole. Even better, one great big pole atop which the seed can be placed.

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#6
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Re: The Science of Your Bird Feeder

01/19/2015 9:50 AM

Birds are completely immune to capcaeisin, they can't 'taste' it, they (as far as we can tell) don't 'feel the burn' as it comes out the other end. Birds will happily eat chili peppers right off the vine, fly off to another area and, er, 'deposit' the seeds in a new area.

Many plants have developed methods of seed distribution via the GI tract of animals and birds.

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#4

Re: The Science of Your Bird Feeder

01/16/2015 12:47 PM

We used to put out ears of corn (dried) for the squirrels. This year we got this clever holder for peanuts in the shell, along with an additional seed feeder. The seed feeder hangs from a swivel hook on the tree where we still have the little platform for the corn ears. Squirrels have figured out how to move the feeder near the platform where they sit and feast. The woodpeckers eat the peanuts, and my dogs eat whatever peanuts fall out of the feeder. Oh well. Live and let live, I guess.

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