The .ab6 file defines all the
six-letter bird abbreviations. Each abbreviation is
specified by its taxon field,
which is a relational link to the corresponding taxon
record in the tree file. Fields are:
| Length | Contents |
|---|---|
| 6 | The six-letter bird code, uppercased and aligned flush-left in the field with right blanks. |
| 36 |
The taxon to which this code is referred; a
relational link to the same field in the
.tre file.
|
| varies | The English name from which this abbreviation was derived, with no trailing whitespace. |
Here are examples of lines from an .ab6 file:
ALCGOOBranta canadensis 2 (Aleutian) Canada Goose CALLINCarpodacus mexicanus California Linnet
The first is for code ALCGOO,
derived from the name “Aleutian Canada
Goose,” and it is the second subspecific form for
Branta canadensis, the Canada
Goose. The second line is for code CALLIN, derived from the name
“California Linnet,” an alternate name for
House Finch, Carpodacus mexicanus.