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FULL INSTRUCTIONS
Birds in the City
PREPARE TO CONDUCT BIRDS IN THE CITY
- LEARN TO IDENTIFY ONE OR MORE BIRD SPECIES
Choose one or more bird species
to count along your Transect.
If you are learning how to identify birds, you may want to conduct your first
Transects by counting only a few common species and then adding more as you
feel comfortable. Click here for a list of some of the birds you might see in your city.
- FIND A STUDY SITE TO CONDUCT BIRDS IN THE CITY
You can conduct Birds in the City at any location in any city. Remember that
each location will have different species or numbers of birds. Walk and watch birds along one or
more blocks in a fairly straight line. This line is called a Transect. You
can have as many Transects as you want. Each Transect can be about one to
five city blocks long.
- SET UP YOUR TRANSECT
a. Mark two spots on a printed or hand-drawn map
- A point where you will begin your Transect: this is your "start" point
- A point where you will end your Transect: this is your "stop" point

The start and stop points should be at least one but not more than five city
blocks apart. If you do not have street intersections then make your Transect
about 55-280 yards long (50-250 meters).
On the map, draw a line connecting your start and stop points. Try to make
the line as straight as possible. The line will be the center of your Transect.
You will count the birds you see to the left and right of this center line.
b. At the Transect location:
- Determine the distance between the start and stop points. You can do this
by pacing or using a tape measure.
- Learn the width of the Transect. You will count birds that are within
50 feet to each side of the center line. An easy way to estimate 50 feet
is to imagine the lengths of 1 1/2 city buses or 3 cars. You don't need to
measure the width exactly but try to find some features that you know are
about 50 feet from the line. For example, you may see trees, buildings or
fences that are about 50 feet from the line. Measure some of these by pacing or using a measuring tape. Remember the
features to help you when you are counting your birds.
Birds that are within 50 feet of the line are "in" your Transect. Birds
beyond the 50 feet are "outside" the Transect. It is important that you
get a "feel" for the width of your Transect.
- Complete the Habitat Form.
You can measure the length of your Transect and record the habitat data on
the same day that you begin counting birds or you can complete them ahead
of time. You only need to record the length and habitat information once.
You may count birds along the same Transect as many times as you wish.
- PRACTICE YOUR COUNT (optional)
You may want to practice counting birds along a new Transect before you begin
your official counts. When you count birds along a Transect, you will be recording
which birds are "in" the Transect (within 50 feet of the center line) and
which birds are "outside" the Transect. If you have never conducted a Transect
count before, practicing will help you to get a feel for the dimensions of
the Transect, especially the width. Practicing also will help you find out
how long it takes to complete the count.
First try counting the birds without recording the species. This will help
you to focus on determining which birds are in and where along the Transect
it may be difficult to count (for example, if there is a lot of noise or other
disturbance). Practicing also can help you to get familiar with the Tally
Sheets and to help you figure out what bird species you might see along the
Transect. Record the information on a Tally Sheet but please do not submit
the bird count data.
- CHOOSE A BIRD IDENTIFICATION METHOD
You can choose to count all of the birds you see along your Transect or
only selected species. Choose one of these two methods before beginning
your count. Click here to find out why you should choose a method before counting birds.
a. Selected Species Method: record only certain
species, families,
or groups of species
Choose this method if you want to
- improve your bird identification skills by focusing on one or a few
species at a time
- focus on one or more bird species
- locate birds for which there are other projects you can conduct
For the Selected Species method, you will record counts only for selected
birds along your Transect. If you are not sure which birds to count, you may
choose from the list of recommended species for bird
study.
Recommended bird species:
If you haven't already decided which species to count for the Selected
Species method, here is a list of suggested species. These species are
- of scientific interest
- important in other citizen-science projects
- good subjects for you to use for your own research project
or
- common in cities and easily identifiable
The recommended species include
b. Full ID Method: identify and count all birds
This method is moderately difficult. It is recommended if
- you are already comfortable with bird identification and counting birds
along a transect, or
- you have a group of observers who have divided up the bird identification
responsibilities
Count and record all of the birds you see. When a bird flies over too quickly
or leaves before you have had a chance to identify it, record it as "unidentified."
MATERIALS NEEDED
- Tally
Sheet
- pen or pencil, clipboard or other hard surface
Optional
CONDUCT YOUR COUNT
After choosing your method and getting your materials ready you can head out
to your start location.
- FILL IN THE TOP OF YOUR TALLY SHEET
- Date, start time
- A list of the birds you will count
- WALK ALONG THE TRANSECT LOOKING AND LISTENING FOR BIRDS.
Beginning at your start point, walk along the Transect looking and listening
for birds. Count the birds you see or hear and record the following on the
Tally Sheet
- Numbers of birds you see or hear in the Transect (within 50 feet
[15 meters] of the transect's center line)
- Numbers of birds you hear or see outside the Transect (more than
50 feet from the center line)
- Numbers of birds you see fly over (birds that fly over your Transect
but do not land anywhere that you can see)
- RECORD YOUR END TIME AND THE TIME
YOU SPENT OBSERVING
- SUBMIT YOUR DATA
Mail your Habitat Forms and Tally Sheets to the Cornell Lab of Ornithology.
Send only one Habitat Form per Transect. You can send many Tally Sheets for
each Transect.
Mail to Urban Bird Studies / Birds in the City Cornell Lab of
Ornithology 159 Sapsucker Woods Road Ithaca, NY 14850
You may include any questions, comments and concerns in the same
envelope.
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