Although Baja California has not experienced loss of wetlands comparable in magnitude to that in California, some habitat changes have provoked changes in the abundance and distribution of wetland avifauna. This paper document ocurrence and changes in avian composition a long the wetland complexes in Baja California. Threats to the wetlands are primarily from resort and industrial developments being planned by international companies. Conservation of these vital avian habitats is a matter of concern to all ornithologist. 

Between September 1984 and August 1985, monthly qualitative observations of the birds in seven different habitats and five observation sites were undertaken. Forty-nine marine and 20 terrestial species were recorded. Considering the habitats 30 species was recorded in lower marsh and mud-flats, 27 species in high marsh, 23 for dunes, 22 water surface withinn the dike, 21 in the mid- marsh and 18 water surface outside the dike. The largest numbers of species was recorded at the head of the estuary (44).Four of the recorded species are considered in danger of extinction Rallus longirostris levipes, Sterna antillarum browni, Pelecanus occidentalis californicus y Passerculus sandwichensis beldingi. Bird species diversity in the Punta Banda estuary is tightly linked to habitat diversity as well as to habitat specificity show by birds. The predictable consequences of any reduction in habitat diversity should be given priority consideration in planning the development of the region.

En este anexo se incluye como fauna costera a todos los organismos de la macrofauna que habitan por encima de la línea de la marea más baja. Se presentan las listas faunísticas para cada unidad ambiental, y el estatus de cada especie. En el estatus se incluyen las categorías enlistadas en los términos de referencia (endémicas y en peligro de extinción) más una serie de categorías que se consideran indispensables para lograr un panorama adecuado a los fines del manejo.

Se documentó un total de 335 especies de fauna costera, las cuales se distribuyen espacialmente para conformar conjuntos diferentes en cada unidad ambiental. Del total de 335 especies de fauna costera, 166 fueron invertebrados, 120 aves, 29 mamíferos, 15 reptiles, 3 peces y 2 anfibios.

Se registró la presencia de una especie endémica (ave); 4 especies en peligro de extinción (aves); 12 especies en cuidado especias (anfibios; aves); 26 especies de utilidad cinegética (aves; mamíferos); y 67 especies útiles por su interés científico (aves). 

Este reporte no publicado del Point Reyes Bird Observatory (PRBO) incluye censos de aves playeras del Estero de Punta y Bahía San Quintín. Estos censos formaron parte de un proyecto mas extenso que incluyó a todos los humedales del Corredor del Pacífico entre British Columbia, Canadá y Baja California, México.

Unitt, P., A. Rea, E. Palacios, E. Mellink, L. Alfaro and S. Gonzalez. 1995. Noteworthy records of birds in Northwestern Baja California, México. Western Birds 26:144-154.

Even after the contributions of Wilbur (1987) and several recent reports in Western Birds, the distribution of many birds in Baja California remain poorly known. Observations report in this paper were made by the authors separately or together between 1975 and June 1994. But this paper only include data for northwestern Baja California, that is, between the international border and Río de El Rosario and west of the summits of the Sierras Juárez and San Pedro Mártir. Almost all the records are based on sight identifications only, owing to the difficulty, even for Mexican citizen, in complying with current collecting regulations in México. A total of 44 birds were sighted in 42 sites visited.