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Why High-Fat Wild Bird Food Matters During Fall Migration

by Mike Allway
Why High-Fat Wild Bird Food Matters During Fall Migration

You may notice more activity around your bird feeders as summer turns to fall. That's because many wild birds are preparing for one of the most demanding parts of their year. Migratory species are preparing to travel hundreds or even thousands of miles, while birds that remain in the area are facing colder weather and changes in natural food availability.

During this season, energy-rich bird food can provide a valuable addition to the seeds, fruits, and insects birds find naturally. High-fat bird food provides concentrated energy, making ingredients such as sunflower seeds, sunflower hearts, peanuts, and Nyjer® useful choices for many backyard visitors. 

 

Why Wild Birds Need More Fat During Fall

Fall migration takes a tremendous amount of energy. Before migrating, many birds increase how much they eat and build fat reserves that can later be used as fuel during flight.

As daylight shortens toward the end of summer, some migratory birds enter a period of increased feeding known as hyperphagia. This can last for two weeks or longer as birds prepare for migration and store fat. The change can be dramatic. Ruby-throated Hummingbirds, for example, may double their body weight in fat before beginning migration.

Resident birds face their own seasonal challenges. As temperatures fall, maintaining body temperature requires energy, particularly during cold nights. Providing calorie-dense foods can complement the natural foods available around your property as fall progresses into winter.

 

How Fat Helps Birds Prepare For Migration And Winter

Fat is especially useful to migrating birds because it stores a large amount of energy without adding as much bulk as other energy sources. For an animal that needs to stay light enough to fly efficiently, fat is particularly well-suited to long-distance travel. 

Research into migratory bird physiology also shows that stored fatty acids provide a major source of fuel during migratory movement. Birds can build up their reserves before leaving and then replenish those stores at stopover areas along their routes. This cycle of fueling, flight, and refueling is an important part of long-distance migration.

Fat remains useful after the migration season passes as well. Cold temperatures create additional energy demands for birds that remain through winter, and fat can provide valuable fuel during both demanding flights and cold winter nights.

Providing high-fat wild bird food won't replace the variety of foods birds find in nature, but it can give feeder visitors another convenient source of energy during demanding parts of the year.


Which Backyard Birds Benefit Most From High-Fat Wild Bird Food

The birds visiting your feeder will depend on where you live, the season, local habitat, and the foods you offer. Different species have different feeding preferences, so there isn't a single high-fat food that will appeal equally to every backyard visitor.

Cardinals, chickadees, finches, woodpeckers, and blue jays are among the familiar backyard birds that eat energy-rich seeds. Some of these birds remain active around feeders as temperatures fall, while others may appear more frequently as seasonal movements bring different visitors through your area.

Blue jays and nuthatches have another interesting feeding behavior. Both are known to cache food. Offering calorie-dense foods such as peanuts gives these birds an energy-rich option to take from the feeder and store for later.

Finches have their own feeding preferences. Goldfinches, Pine Siskins, and other small finches are well-suited to small seeds such as Nyjer. Its high oil content makes it an energy-rich choice as temperatures fall.

Pay attention to who's actually visiting your yard throughout the fall. Changes in feeder activity can help you decide which foods to offer as migrating birds pass through and resident birds prepare for colder weather.


What Ingredients Provide Healthy Energy For Wild Birds

Sunflower seeds, sunflower hearts, peanuts, Nyjer, and suet are all energy-rich foods that can support wild birds during fall. Each provides a different combination of fat, protein, carbohydrates, vitamins, and minerals, so variety can be more useful than simply choosing the bird food with the highest fat content.

Black oil sunflower is a versatile choice for many seed-eating birds. Kalmbach's Heritage Seeds Black Oil Sunflower Seeds provide a minimum of 30% crude fat and 15.5% crude protein.

For birds that have difficulty cracking shells, sunflower hearts provide direct access to the kernel. Kalmbach's sunflower hearts contain a minimum of 42% crude fat and 20% crude protein.

Peanuts provide another calorie-dense option, particularly for larger feeder visitors. Heritage Seeds Peanut Splits provide a minimum of 46% crude fat and 25% crude protein. Nyjer offers an oil-rich option for smaller birds such as finches, while suet provides concentrated energy and can be especially valuable as colder weather arrives.

You don't need to offer every ingredient at once. Consider the birds using your feeders, the feeder styles you have available, and which foods are actually being eaten. A mix of appropriate, energy-rich foods can provide variety while helping you avoid unwanted seeds and unnecessary waste.

 

When To Start Offering High-Fat Wild Bird Food

You don't need to wait for the first frost to adjust your fall bird-feeding routine. Migration begins earlier than many people realize, although the timing varies by species and location.

Most nocturnal autumn migration in North America takes place from about mid-August through mid-November. In the contiguous United States, peak migration generally falls between mid-September and mid-October. Local timing varies considerably, so the birds arriving at your feeders may change throughout the season.

Late summer and early fall are good times to begin paying closer attention to feeder activity. If you're seeing new species, increased activity, or birds moving through your area, you can make energy-rich seeds available alongside the foods you normally offer.

Continue watching your feeders as migration winds down. Some visitors will move south, while resident birds and winter arrivals may continue using your feeding station as temperatures fall.

 

Shop High-Fat Wild Bird Food From Kalmbach

Fall can bring an exciting mix of familiar backyard birds and seasonal visitors. Offering quality bird food with calorie-dense ingredients provides an additional food source as migratory birds build and replenish energy reserves and resident birds prepare for colder weather.

Kalmbach Feeds offers individual seeds and premium blends designed for a variety of backyard birds. Our Songbird Reserve™ Shell Free No Mess combines ingredients such as sunflower hearts, peanuts, tree nuts, and pumpkin seeds into a shell-free blend with a minimum of 28% crude fat. It's formulated for a variety of birds like cardinals, chickadees, titmice, nuthatches, woodpeckers, jays, finches, wrens, and juncos. One blend makes it easy to feed many birds in your backyard.

Explore our wild bird food to find individual seeds and blends for the birds visiting your backyard. Keep your feeders clean and stocked with fresh food, and enjoy watching the changes that fall migration brings.

Nyjer® is a federally registered trademark owned by the Wild Bird Feeding Institute.



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Mike Allway

Mike Allway is Director of Wild Bird Seed at Kalmbach Feeds and a lifelong conservationist who believes feeding birds is one of the simplest ways to connect with nature. With over a decade of experience in feed, pet, and wildlife nutrition, Mike is passionate about creating high-quality blends

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