JONATHAN L. ATWOOD (Author) A MAXIMUM ESTIMATE OF THE CALIFORNIA GNATCATCHER’S POPULATION SIZE IN THE UNITED STATES PDF
GUSTAVO D. DANEMANN, JUAN R. GUZMAN POO (Author) NOTES ON THE BIRDS OF SAN IGNACIO LAGOON, BAJA CALIFORNIA SUR, MEXICO PDF
M. RALPH BROWNING (Author) GEOGRAPHIC VARIATION IN HIRUNDO PYRRHONOTA (CLIFF SWALLOW) FROM NORTHERN NORTH AMERICA PDF
STEVE N. G. HOWELL, SOPHIE WEBB (Author) NOTES: SOUTHERNMOST RECORDS OF WESTERN AND YELLOW-FOOTED GULLS PDF
WAYNE C. WEBER, JOHN IRELAND (Author) NOTES: TIDEWATER BREEDING RECORDS OF THE WESTERN GREBE NEAR VANCOUVER, BRITISH COLUMBIA PDF
JEFFREY G. GROTH (Author) NOTES: WHITE-WINGED CROSSBILL BREEDING IN SOUTHERN COLORADO, WITH NOTES ON JUVENILES’ CALLS PDF
EDUARDO PALACIOS, ERIC MELLINK (Author) NOTES: BREEDING BIRD RECORDS FROM MONTAGUE ISLAND, NORTHERN GULF OF CALIFORNIA PDF
GUY McCASKIE (Author) BOOK REVIEW: Birds of the Lower Colorado River Valley: Birds of the Lower Colorado River Valley. 1991. Kenneth V. Rosenberg, Robert D. Ohmart, William C. Hunter, and Bertin W. Anderson. University of Arizona Press, Tucson. 416 pp., 33 black and white figures and 6 tables. Price: $40.00 clothbound. PDF
