WBBA Brewer's Blackbird Data

Brewer's Blackbird Map and Data

Max Breeding Status # Quads # Priority Blocks # Total Blocks

Confirmed 171 139 188

Probable 74 61 84

Possible 39 33 44

Species Total 284 233 316

Total in Atlas 1132 1041 3854

Species Percentage 25.09 22.38 8.20

Species Total is the sum of all quads/priority blocks/total blocks the species was recorded in with at least a Possible breeding status. Total in Atlas is the number of quads/priority blocks/total blocks in the atlas with data (regardless of species). Species Percentage is the Species Total quads/priority blocks/total blocks divided by the Total in Atlas quads/priority blocks/total blocks.

Breeding Behavior # Records Min Date Max Date Mid Date(s)

Fledged Young 32 06/12 08/02 07/06

Feeding Young 133 05/29 08/03 06/29

Nest With Young 8 05/30 07/07 06/27, 06/28

Nest With Eggs 3 06/01 06/17 06/03

Occupied Nest 3 05/01 07/08 06/12

Distraction Display 4 06/03 07/07 06/29, 07/02

Nest Building 17 05/04 07/08 06/14

Territorial/Courtship 9 05/19 07/11 06/18

Territorial/Courtship category includes five Probable breeding codes: T (Territorial), C (Courtship), N (Hole Nesters Visiting Nest Site), A (Agitated Behavior or Anxiety Calls), and B (Nest Building by wrens or woodpeckers). Nest Building category includes CN (Carrying Nesting Material) and NB (Nest Building). Nest with Young category includes NY (Nest with Young) and FS (Carrying Fecal Sac). Breeding codes of PE (Physiological Evidence), DD (Distraction Display), and UN (Used Nest) are not listed.

Max Abundance # Total Blocks

Not Indicated 72

1 breeding pair 26

2-10 breeding pairs 122

11-100 breeding pairs 93

101-1000 breeding pairs 3

Number of Total Blocks is the number of blocks for which the indicated abundance is the maximum recorded for the species in the block. Abundance represents the estimated number of breeding pairs in a block.

Habitat Code # Records

Not Indicated 72

FLHs 1

FLM 1

OLA 11

OLAa 1

OLAg 3

OLAp 5

OLAx 2

OLN 2

OLNb 2

OLNm 2

OLU 2

OLWl 1

OLWl(i) 1

OLWm 6

OLWm(w) 1

OLWr 1

OU 2

OUA 29

OUAa 17

OUAc 6

OUAg 50

OUAg(e) 1

OUAp 16

OUAr 4

OUAs 2

OUAx 2

OUN 11

OUU 29

SLCh 1

SLCn 1

SLHc 1

SLHh 2

SLHh(w) 1

SLHn 6

SLHn(w) 1

SLHo 3

SLHo(w) 1

SLMc(w) 1

SLMh 1

SLMn(w) 1

SU 2

SUCc 1

SUCp 2

SUHc 5

SUHn 7

SUHo 2

SUHp 1

SUMc 5

SUMo 1

U 1

UR 1

URC 1

URO 4

URR 17

URX 1

USO 2

UUO 1

Habitat Codes are listed from all records for the species. More than one habitat code may have been recorded in a quad or block for the species. For explanation of habitat codes, see Habitat Codes.

Last edit date: May 2, 2003