pycbc: A Python interface to the Christmas Bird Count database |  |
pycbc: A Python interface to the Christmas Bird Count database | |
Each instance represents one kind of bird seen within a circle-year.
.lat, .lon, .year_no, .year_key
The concatenation of these columns relates each instance to the effort table.
.seq_no
An integer value that orders census records within a year according to their published order.
.form, .rel, .alt_form
These three values identify the type of bird. See
Section 3.6, “Kind of bird”. The .form value is always uppercase and
right-blank-padded to a length of six. The .rel value is " ", "x", or "/". If the .rel is not blank, the .alt_form attribute is the second bird
code, also uppercased and right-blank-padded to six
characters.
.age
Age code: " ", "a",
or "i".
.sex
Sex code: " ", "m",
or "f".
.plus
Count-week flag: " " or "+".
.q
Questionable status: " " or "q.
.census
Count of birds as an int. The value
may be −1 to signify an unknown count.
There used to be at least one row in this table
that had a zero census, which is an error.
(Audubon's database, by contrast, uses zero for
count-week birds and never shows a value of
−1.)