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Wetland Complex

Total Count Shorebirds

Winter Surveys

Pacífic Migratory Route

(A)

R A N K

r

Laguna Sayula / Zacoalco /

72,003

8o.

San Marcos, Jal.

s

Laguna Santiaguillo, Dgo.

(c)

3,142

20o.

t

Laguna de Bustillos, Chih.

(c)

2,887

21o.

u

Laguna Mexicanos, Chih.

(c)

2,520

22o.

v

Laguna el Cuervo, Chih.

(c)

-

25o.

w

Laguna Asención /

1,944

24o.

Ojo Federico, Chih.

(c)

83,338 6o. 11,689 18o.

206,038

2o.

134,827

4o.

91,016

5o.

72,946

7o.

69,187

9o.

57,182

10o.

42,079

11o.

41,205

12o.

25,421

13o.

16,402

16o.

Gulf Migratory Route x Laguna Madre, Tamps.

Campeche / Puerto Progreso y Camp. Yuc.

(b)

163,744

3o.

267,983

1o.

4,379

19o.

20,633

14o.

14,388

17o.

2,389

23o.

(a)

n

Bahía de San Quintín, B.C.

  • o

    Bahía Guadalupana, Sin.

Central Migratory Route

(a)

(a)

19,597

15o.

a

b

c d

Estuario del Río Colorado, B.C. y Son. Laguna Ojo de Liebre / Guerrero Negro, B.C.S. Marismas Nacionales, Nay. Bahía Santa María, Sin.

e f g h i j

Bahía Topolobampo, Sin. Ensenada Pabellones, Sin. Estero Lobos, Son. Mar Muerto, Oax. Manzanillo, Col. Estero Tobari, Son.

Estero Agiabampo / m Bahía Jitzamuri, Sin.

p q

Bahía Yábaros, Son. Bahía Magdalena, B.C.S.

k l

Laguna la Joya, Chis. Laguna San Ignacio, B.C.S. (a)

Number

R

Priority

R

Overall

R

of

A

on Value

A

Priority

A

Species

N

of

N

Mean

N

or

K

Potential

K

Rank

K

Richness

Species

Potential

Mean

2o.

(B)

37

(C)

3.35

1o.

1o.

A+B+C

2.00

38

1o.

32

7o.

32

7o.

34

5o.

33

6o.

38

1o.

36

3o.

33

6o.

37

2o.

35

4o.

34

5o.

35

4o.

36

3o.

33

6o.

33

6o.

33

6o.

3.33

3o.

5.33

5o.

5.67

6o.

6.33

7o.

6.33

7o.

6.67

8o.

7.33

9o.

7.33

9o.

7.67

10o.

8.00

11o.

3.18

7o.

3.22

5o.

3.22

5o.

3.18

7o.

3.24

4o.

3.13

9o.

3.14

8o.

3.24

4o.

3.14

8o.

3.26

3o.

3.26

3o.

3.00

2o.

3.29

2o.

8.33

12o.

3.11 10o.

9.00

13o.

3.24 4o.

9.00

13o.

3.24 4o.

11.00

14o.

3.24

4o.

8.33

12o.

20

9o.

3.00

12o.

13.67

15o.

18

11o.

3.00

12o.

14.67

16o.

18

11o.

3.00

12o.

15.00

17o.

19

10o.

3.00

12o.

15.67

18o.

25

8o.

3.04

11o.

9.00

13o.

18

11o.

3.00

12o.

15.67

18o.

3.19

6o.

3.29

2o.

36

3o.

35

4o.

5.00 4o. 8.00 11o.

  • (A)

    Shorebird species potentially present, based on distribution maps in Howell and Webb (1995).

  • (B)

    Central Migratory Route aerial surveys, September 1994 from A. Lafon and J. Taylor (1994). All other data from Morrison et al. (1992, 1993, 1994).

  • (C)

    Mean priority scores of shorebird species potentially present, utilizes “Species Priority Matrix” from U.S. Shorebird Conservation Plan which ranks: population trend, relative abundance, threats to breeding and non breeding habitat, breeding and non breeding distribution.

A+B+C As a result of inclusion of the winter count, this prioritization scheme is biased towards habitat use during winter vs. breeding habitat.

  • (a)

    Estimated 50% of N.A. Pacific coast Charadrius alexandrinus (Snowy Plover), nest in Baja California.

  • (b)

    Laguna Madre from Mezquital to Boca Barra Chica (83 km) held 368 Charadrius melodus (Piping Plover) in December 1997, which represent 8% of the total breeding population.

  • (c)

    These wetlands largely reflect biologists opinion with regards to potential as shorebird habitat. Data during wet years are lacking.

55

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