CHAPTER 3 - DIGITAL ATLAS OF COLONIES OF SEVEN SPECIES OF INLAND-BREEDING WATERBIRDS IN CALIFORNIA

Project Description :: Mapping Approach :: Species Range Maps :: Species Tables

INTERACTIVE MAPS Northern Region | Central Region | Southern Region

 

Figure 6. Relative size of 73 colonies of the Black Tern in California on the basis of the highest counts of nesting pairs in any year, 1997 to 1999 (Tables 14 and 16). An estimated 2523 adult Black Terns were in Sacramento Valley rice fields in 1998 on the basis of sampling this habitat using roadside surveys (Table 15); mapped sites in this area represent locations of confirmed breeding found while sampling, as it was not possible to locate all colonies in this extensive area of nearly continuous habitat (see Methods).

SPECIES RANGE MAPS

Figure 1. American White Pelican

Figure 2. Double-crested Cormorant

Figure 3. Ring-billed Gull

Figure 4. California Gull

Figure 5. Caspian Tern

Figure 6. Black Tern

Figure 7. Forster's Tern