Breeding Bird Atlas data overview.

 This data was originally collected from 1986-1991. The data was subsequently proofed in 1994-1995 by Bill Pranty and Dr. Brad Stith and was delivered in December 1995.  The estimated accuracy rate is 99.1% or about 1 error  for every 1,100 breeding codes.  The surveys occurred in all 67 counties which were divided into 1028, 7.5-minute topographic quadrangles. Each quad was further divided into 6 (2 wide X 3 tall) equal-sized blocks of about 10 miles2 of which about 75%  were surveyed.  For each species, a breeding code indicating the "highest" breeding evidence was recorded.  The tables are stored in dBase IV format which may be opened with dBase, Microsoft Access, Microsoft Excel, or Paradox.    

 The tables and fields are arranged as follows:

 BIRDS. One record for each bird reported per block. 
There may be more than one record per bird per block.  Records are generally arranged by block, but this order should not be assumed.

REGION

 BBA region for the bird.
COUNTY_PTR Numeric indication of the county for the bird.
QUAD_PTR Numeric indication, link to the QUADS table.
BLOCK Number 1 to 6 indicating which block within the quad.  See block layout below.

SPEC_PTR

 Unused field used in the mapping.

BIRD_COD

 Four letter species code, links to the BIRDLIST table
BRED_CLASS Numeric indication of the breeding code.
BRED_COD Alphabetic indication of the breeding code, links to the "CODE" table

BRED_YR

 Unknown, but probably the year of the survey.

STATUS

 Unknown code used in the mapping.

BRED_GROUP

 Unknown code used in the mapping.
 
 BIRDLIST One record for each species observed in the state.
 Records are arranged in taxonomic order.

RECORDORDE

 Order of the bird in taxonomic order.
BIRD_ABBRE Four letter species code
BIRD_NAME Common name of the bird
QUADS_PO Number of quads reported possible breeding for this species statewide
QUADS_PR Number of quads reported probable breeding for this species statewide
QUADS_CO. Number of quads reported confirmed breeding for this species statewide
BLOCKS_PO Number of blocks reported possible breeding for this species statewide.
BLOCKS_PR Number of blocks reported probable breeding for this species statewide.
BLOCKS_CO Number  of blocks reported  confirmed breeding for this species statewide.
COUNTYPO Number of counties, where the highest breeding code indicates possible breeding
COUNTYPR Number of counties, where the highest breeding code indicates probably breeding
COUNTYCO Number of counties, where the highest breeding code indicates Confirmed breeding
 
QUADS One record for each topoquad in the state.
Records are arranged alphabetically by quad name.  Note, quads may span counties.
QUAD_NAME Name of the topographic quad.  www.topozone.com may be used to get a look at the topoquad by searching.
QUAD_PTR Numeric indication of the quad, link from the BIRDS table.

REGION

 Numeric indication of the region.  Click here for regions map.

COUNTY_NAM

The county  that the quad center resides in,
COUNTY_PTR Numeric indication of the county, where one is the first county alphabetically (Alachua)
CEN_LAT The latitude of the centroid of the topoquad

CEN_LON

The longitude of the centroid of the topoquad
QUAD_STAT Unknown status used in mapping.
 
CODES One record for each breeding code 
Codes are arranged from highest evidence of breeding to least.

BRED_CLAS

 Numeric indication of the "level" of the behavior.  A lower number indicates a greater evidence of breeding.
CODE Two character indicating the breeding code.  Click here for definition.
DESCRTIV Textual description of what the breeding codes mean
GENERAL_CO Two letter code indicated breeding confirmation, CO=Confirmed, PR=Probable, PO=Possible, OB=Observed
GENERAL Longer string indicating whether this code indicated confirmed, probable, or possible breeding.

GEN_CLASS

 Numeric code indicating breeding confirmation.

Table relationships

Blocks within a quad are arranged as below:

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