How to keep a record of your local patch

In short: a local patch is one place near home that you bird again and again: a park, a pond, a stretch of river, even your street. To keep a useful record, set the boundary once and keep it, then note the same few things every visit: the date, the time, the weather, how long you stayed, and the birds, with rough counts. Look back by season, not just by total.

A patch record is different from a life list. A life list collects each species once. A patch record shows a place changing through the year: when the first warblers arrive, when the ducks leave, which birds nest. After a few years it can be one of the most rewarding records a birder keeps.

Key facts

• Audubon magazine describes patch birding as birding regularly in a place close to home. Its writer adds that "no one has defined the optimal size": a patch can be as big as a forest or as small as a grove of trees.
• The same article says patch birding made the bird guide Heather Wolf a better birder by ear, and taught her more about how birds choose habitat.
• eBird defines a patch as a series of locations, generally referring to the same area, summarized as one unit. Its "yard" is the patch where you live, limited to property you own or rent.
• Under the ABA recording rules, a bird must be inside the list's area when you encounter it. You, the observer, need not be.

Facts checked: October 2, 2026.

What makes a good patch

There's no official size. Audubon's article mentions patches as different as Brooklyn Bridge Park in New York (85 acres) and Washington Square Park in Manhattan (10 acres). Its writer's own route takes about 30 minutes at a brisk pace, or an hour at a leisurely one.

What matters more than size:

• Close to home. Somewhere you can reach in a few minutes, so you'll actually go often.
• Easy for you to get around. A level path or a good bench is worth more than a long trail you rarely walk. (Our guide to birding with less walking has ideas.)
• Somewhere green. Audubon's activity guide on habitat patches suggests a park, a yard or garden, or a small green area near water.
• Open to you. Public land, or private land where you have permission. The American Birding Association's ethics code is plain: "Never enter private property without the landowner's permission."

Your own yard can be your patch. Some birders keep a yard list: the species seen from home.

Step 1: draw your boundary and keep it

Write down where your patch starts and ends, and sketch a simple map. Audubon's habitat-patch activity suggests noting how big the area is and where the water is, with symbols for trees, flowers and buildings. Mark the paths, feeders and any mowed or wild areas too.

Then keep the boundary the same. That's what makes one year comparable with the next. If you change it, note the date.

Which birds count? It's your record, so you decide, but decide once. Many birders follow the American Birding Association's rule for any list: the bird must be inside the area when you see or hear it, though you don't have to be. So a hawk circling over the pond counts for a pond patch even if you're watching from the parking lot just outside. A bird far beyond the boundary doesn't. Write your choice on the first page.

Step 2: note the same few things every visit

Audubon's habitat-patch activity asks visitors to record the time of day and the weather, and what the birds are doing. For an adult patch record, these lines are enough:

Counts don't have to be exact. "About 40 Canada Geese" is fine. What matters is noting them the same way each time.

Note what you didn't see, too, if it stands out: "no swallows today" in late September may mean they've left for the year.

Describe behavior and changes, not causes. "The pond was half dry and there were no herons" is a good note. Guessing why can wait until you have several years to compare.

Step 3: look back by season

Once a season, or once a year, read back through your notes and write a short summary. A few ideas:

• First and last dates. When did the first Red-winged Blackbird sing? When did the last hummingbird leave? These dates are the heart of a patch record.
• Peak counts. The most of each species on one visit.
• Breeders. Which birds nested, and where.
• The list. Every species ever recorded in the patch, with the date of the first record. That's your patch list.
• One sentence on the year. "A wet spring, lots of shorebirds on the flooded field."

Avoid comparing totals alone. A patch with 80 species isn't "better" than one with 60. The interesting part is how your own place changes.

Where to keep it

• A notebook. Simple and pleasant. Our guide on what to write in a birding journal has a one-page layout that works well for patch visits. Audubon's article also suggests a field journal if you'd rather keep your notes private.
• A spreadsheet. One row per species per visit, with the date. Easy to sort later. See how to turn a paper list into a spreadsheet.
• eBird. If you use it, eBird lets you group several of your locations into a patch, and your yard is the patch where you live. You can have as many patch and yard lists as you like. Only species on checklists you've made public count toward your patch total and ranking. Audubon's article notes that shared sightings can help science and conservation.

Whatever you use, keep a copy somewhere safe: here's how to back up your birding records.

What to keep private

Most patch notes are harmless to share. A few things are better kept to yourself, or shared only with care:

• Nests and roosts. The ABA ethics code asks birders to be "particularly cautious around active nests and nesting colonies, roosts, display sites, and feeding sites."
• Private land. If a landowner lets you in, don't publish directions that send others there.
• Your own home. If your patch is your yard, think twice before posting its exact location.

Questions people ask

Is a patch list the same as a yard list?

A yard list is one kind of patch list: the patch where you live. eBird limits a "yard" to property you own or rent.

How often should I visit?

As often as you enjoy it. Audubon's habitat-patch activity suggests a visit a day for a week to get to know a place, but regular weekly visits make a fine long-term record.

What if a bird's name changes?

Keep your old note as it is, and add the new name beside it. Scientists sometimes split or merge species; see bird splits and lumps.

Birdfolio is not affiliated with eBird, the Cornell Lab of Ornithology or iNaturalist.