Migration Season: Building Birdhouses & Feeders Before Winter

The first cool mornings bring a rush of movement through the yard. Sparrows gather in shrubs, warblers pause for a meal, and resident birds start looking for dependable cover. Bird houses and feeders give you a practical way to help, but timing and placement matter as much as the project itself.

Early fall gives you room to build, repair, and install without working around ice or deep snow. A solid nesting box, a separate winter roost, clean food, and natural cover can make your yard more useful when temperatures drop.

Start with the yard you have, then add one good project at a time.

Walk your yard before you buy lumber or fill a feeder. Look for existing cover first. Native trees, dense shrubs, dried seed heads, berry-producing plants, brush piles, and a clean water source give birds places to rest and feed.

Fall migrants may stay for an afternoon or a few days. Cardinals, chickadees, nuthatches, juncos, and other resident birds use the same shelter all winter. Leave some flower stalks standing if they hold seed. A brush pile tucked behind shrubs can offer cover without turning the whole yard into a mess.

Use NestWatch's birdhouse planning guide to compare local habitat with the kind of box you plan to build. A bird house is usually for nesting in spring. An enclosed roosting box has different features and gives small birds a place to gather on cold nights.

Before choosing a spot, check these basics:

• Keep boxes and feeders away from busy walkways, dog runs, and bright all-night lights.
• Place them where cats cannot hide nearby or climb directly to the box.
• Avoid exposed corners that take the full force of winter wind.
• Check nearby windows before installing any feeder or bird house.
• Use shrubs as nearby cover, but don't put a feeder inside a dense ambush zone.

A yard does not need ten feeders to help birds. It needs clean food, safe cover, and a location that does not create new hazards.

Build bird houses from untreated cedar, pine, or exterior-grade wood. Cedar lasts well outdoors. Pine costs less and works fine when the roof and seams keep water out. Avoid pressure-treated lumber, plywood that is falling apart, or boards with chemical odors.

Use corrosion-resistant screws instead of nails when possible. Screws hold up better through wet weather and make future repairs easier. Add drainage holes in the floor and ventilation holes near the roofline. The roof should slope away from the entrance, with enough overhang to limit rain.

Keep the inside unfinished. Birds need rough interior walls so nestlings can climb out. Paint or stain belongs on the outside only, and products should be non-toxic and fully cured before installation. Skip the decorative perch. Cavity-nesting birds do not need one, and a perch can help predators reach the entrance.

Clean and inspect boxes before winter, even if they will not be used until spring. Remove old nesting material, check screws, clear drain holes, and repair loose roofs.

Match the Entrance and Location to Local Bird Species

The entrance hole decides who can use the box. A chickadee, house wren, or white-breasted nuthatch generally needs a 1 1/8-inch opening. An Eastern Bluebird needs a 1 1/2-inch opening. A larger hole can admit starlings, house sparrows, and predators that you did not plan for.

Check Cornell Lab of Ornithology nest box guidance before cutting the entrance. Local species, habitat, and regional conditions should guide the final plan.

Mounting also matters. Put boxes on a sturdy pole or post where possible, not on a tree that gives squirrels and raccoons an easy route. Most boxes need space from one another because many birds defend a territory. Alaska Department of Fish and Game recommends placing many nest boxes at least 50 feet apart, except for social species such as swallows. Add a predator guard where needed, and face the entrance away from prevailing wind.

Turn a Simple Box Into a Better Winter Roost

A nesting box and a roosting box are not the same thing. Nesting boxes hold one breeding pair and young. A roosting box may hold several small birds that share warmth during a hard cold spell.

Build the roost with a tight roof, secure walls, drainage, and ventilation that limits direct drafts. A smaller entrance helps hold heat. Interior footholds or short wooden strips give birds a place to perch above the floor.

Mount the box in a sheltered area with protection from wind. Check it briefly after storms if needed, but do not open it repeatedly during freezing weather. Birds using it need the shelter more than they need an audience.

Different feeders bring different birds. A tube feeder works well for finches, chickadees, and other small seed eaters. Hopper feeders hold more seed and can handle larger birds. Platform feeders give ground-feeding birds room, but seed gets wet faster and needs closer attention.

Suet cages are useful in cold weather. Downy Woodpeckers, nuthatches, and chickadees often visit them. Window feeders offer close viewing, though they must be used with good window-safety practices.

Black oil sunflower seed is a dependable starting food for many backyard species. Safflower may appeal to cardinals and can be less attractive to some squirrels. Nyjer is for finches. Unsalted peanuts attract jays, woodpeckers, and nuthatches. Plain suet is best during cooler weather, when it will not melt or spoil quickly.

Put feeders near cover, but not right beside thick shrubs where a cat can wait. The U.S. Fish and Wildlife Service warns that feeders 15 to 30 feet from windows create a high collision risk. Follow its guidance on feeding wild birds safely by placing feeders within 3 feet of glass or much farther away, and add visible window treatments when needed.

Use the Right Food for Fall Migrants and Winter Residents

Watch the birds before buying a large bag of specialty food. A feeder full of nyjer is wasted if your regular visitors are cardinals and jays. Start with a small amount of fresh black oil sunflower seed, then adjust based on what your yard attracts.

Keep food dry and free of clumps. Do not offer bread, salty leftovers, flavored nuts, or spoiled food. These items do not give birds the nutrition they need and can create sanitation problems.

Fresh apple pieces or native berries may attract some migrants. They are an extra food source, not a replacement for natural habitat. Berry shrubs, seed-bearing plants, and insects in leaf litter remain important food for many species.

Keep Feeders Clean, Dry, and Safe for Birds

Inspect feeders every few days, especially after rain or snow. Remove wet seed, sweep hulls and droppings from below the feeder, and refill only when the remaining food is clean and dry. Scrub feeders regularly with hot soapy water, rinse well, and let them dry completely.

Crowded feeding stations can spread disease. If you see birds that appear weak, swollen-eyed, or unable to fly well, take feeders down for a short break and clean them before returning them to service. Check local wildlife agency notices for active disease concerns.

Use a sturdy hook or pole, plus a squirrel baffle if squirrels empty the feeder. A loose feeder can spill seed, draw rodents, and leave birds without food after a storm.

Early fall is for planning. Check your tools, measure available mounting areas, identify the birds you want to support, and gather untreated lumber. Repair old boxes before deciding you need new ones.

By mid-fall, install roosting boxes, mount repaired bird houses, protect berry shrubs, and set up a heater-free water source that can be refreshed often. Before the first hard freeze, fill feeders, tighten mounts, and store extra seed in sealed metal or heavy-duty plastic containers.

This simple budget helps keep the project manageable:

Build one project at a time. A well-made box and one maintained feeder are better than several neglected pieces.

Avoid Common Birdhouse and Feeder Mistakes

Do not use treated wood, wet paint, or stained interior surfaces. Avoid oversized entrances, missing drainage holes, and decorative perches. These details can make bird houses unsafe or invite unwanted visitors.

Do not overfill feeders if rain is coming. Large amounts of seed spoil faster than you expect. Check nearby glass, especially after moving a feeder, because a new location can create a collision problem.

Keep Winter Care Simple

Through winter, refill food before the feeder is empty, remove snow that blocks entrances, and check mounts after high wind. Make notes about which birds visit and which food disappears first.

Do not seal every ventilation opening in a roost box. Moisture needs a way out. Also, do not disturb birds inside a roost during cold weather unless there is a clear safety problem.

Migration season is a good time to make the yard safer before winter closes in. A durable bird house, a sheltered roosting box, or one clean feeder can give birds a useful stop during a demanding part of the year.

Start small and maintain what you install. Clean food, native plants, safe shelter, and careful placement matter more than having a crowded yard full of structures. The birds that return will show you what to improve next season.