WBBA Brown-headed Cowbird Data

Brown-headed Cowbird Map and Data

Max Breeding Status # Quads # Priority Blocks # Total Blocks

Confirmed 529 452 654

Probable 425 451 609

Possible 75 86 174

Species Total 1029 989 1437

Total in Atlas 1132 1041 3854

Species Percentage 90.90 95.00 37.29

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 402 05/15 08/27 07/07

Feeding Young 141 05/04 08/27 07/06

Nest With Young 38 05/25 07/26 06/23

Nest With Eggs 135 05/04 07/27 06/13

Occupied Nest 6 05/29 06/20 06/11, 06/12

Nest Building 3 05/07 06/05 05/31

Territorial/Courtship 152 04/13 07/31 06/05

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 350

1 breeding pair 54

2-10 breeding pairs 311

11-100 breeding pairs 604

101-1000 breeding pairs 111

1000+ breeding pairs 7

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 708

F 1

FL 1

FLCc 1

FLCs 3

FLCs(e) 1

FLH 9

FLH (e) 5

FLHn 3

FLHn(e) 3

FLHn(w) 1

FLHs 16

FLHs(e) 3

FLHs(i) 1

FLM 9

FLM (e) 1

FLMc 5

FLMs 5

FLMs(e) 1

FU 4

FUC 1

FUCp 4

FUCp(e) 2

FUCp(p) 2

FUCs(p) 1

FUH 24

FUH (e) 8

FUHa 24

FUHa(e) 7

FUHm 37

FUHm(c) 1

FUHm(e) 14

FUHm(w) 1

FUHo 44

FUHo(e) 19

FUHp 1

FUM 23

FUM (e) 7

FUMh 9

FUMp 36

FUMp(e) 5

FUMp(p) 1

FUMs 6

FUMs(e) 1

OL 1

OLA 12

OLAc 1

OLAg 4

OLAp 3

OLAr 1

OLN 2

OLNb 3

OLNm 7

OLU 5

OLW 2

OLWl 4

OLWl(e) 2

OLWm 9

OLWr 4

OLWr(a) 1

OU 6

OUA 58

OUAa 9

OUAc 5

OUAg 29

OUAg(a) 1

OUAp 32

OUAp(w) 1

OUAr 2

OUAx 3

OUN 8

OUU 36

OUU (g) 2

SLCc 1

SLCh 1

SLH 4

SLH (e) 1

SLH (w) 1

SLHc 6

SLHh 13

SLHh(w) 2

SLHn 29

SLHn(e) 1

SLHn(w) 3

SLHo 7

SLHo(e) 1

SLM 11

SLMc 4

SLMh 3

SLMn 6

SLMn(e) 1

SLMo 4

SU 4

SUCc 1

SUCh 1

SUCn 3

SUCp 12

SUCp(p) 1

SUH 19

SUH (e) 2

SUHc 37

SUHh 59

SUHh(g) 1

SUHn 22

SUHo 32

SUM 10

SUM (e) 1

SUMc 12

SUMc(e) 1

SUMh 2

SUMn 6

SUMo 9

SUMo(g) 1

SUMp 1

U 2

UR 3

URC 2

URO 16

URR 225

URR (a) 3

URR (e) 2

URX 3

URX (a) 1

URX (e) 1

USC 2

USO 11

USO (e) 1

USR 17

UU 1

UUO 13

UUR 11

UUR (e) 1

UUX 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