List of vertebrates seen on Baja trip, March 2-8 (253 species)
Please note that this list reflects my personal views on systematics
Abbreviations Mammals Birds-nonPasserines Birds-Passerines Reptiles, Amphibians & Fish

Abbreviations:
Locations: BC - south and west coast of Bahia Concepcion, CBF - Catavina Boulder Field, CC - Magdalena Plain around Ciudad Constitucion, CSL - Cabo San Lucas and the coast eastward, ER - El Rosario and vicinity, GN - Guerrero Negro and vicinity, JB - Juncalito Beach south from Loreto, LC - Laguna Chapala area, LP - La Paz area, LSI - Laguna San Ignacio, MM - Santa Rosa de Mulege Mission area, MP - Magdalena Plain around Puerto Cancun junction, NR - Naranjas Road near the first stream crossing from the east, NRS - Naranjas Road summit area, PC - Hwy 5 around Puertecitos, PF - area west from Punta Final, RC - Rio Candelaria north from Cabo San Lucas, RH - Rio Hardy and adjacent part of Hwy 5, SA - San Antonio area, SG - Sierra de la Giganta crossing between Loreto and Ciudad Insurgentes, SF - San Felipe and beaches to the north, SI - San Ignacio area, SJC - San Jose del Cabo (Estero area), SM - San Matias Pass on Hwy 3, SPM - Sierra San Pedro Martyr National Park, SQ - sand desert area and coast south from San Quintin, SR - Santa Rosalia area, ST - San Telmo area, TS - botanical garden south from Todos Santos, VTV - Volcan Las Tres Virgenes area.
Other abbreviations: ? - identification uncertain, ?? - identification very uncertain, ??? - identification circumstantial, r - roadkill, h - heard only, t - tracks only, v - videotaped, ! - sighting of interest, m - more than 10, mm - more than 100, ct - common throughout, cm - common in many locations, cn - common mostly in the North, cs - common mostly in the South, cw - common mostly on West coast, ce - common mostly on East coast. Baja and Sea of Cortez endemics in bold.

Mammals (48)

Notiosorex crawfordi ??? 1, LP

Macrotus californicus 1, RC
Choeronycteris mexicana ? 2, SA
Myotis californicus cm
M. ciliolabrum ? cn
M. volans ??? 1, CBF
M. yumanensis ??? LSI
M. peninsularis 1, RC
M. vivens 3, JB !
Pipistrellus hesperus cs
Antrozous pallidus m, LC

Procyon lotor 1, r, ST
Bassariscus astutus t, cm
Spilogale gracilis ???t, SA
Canis latrans cn, v
Vulpes macrotis 1, LC
Urocyon cinereoargenteus t, SM
Zalophus californianus 1, LSI

Eschrichtius robustus m, v, LSI
Megaptera novaeangliae 2, CSL
Phocoena sinus ? 3-4, v, SF !

Odocoileus hemionus t, SPM
Ovis canadensis t, VTV

Ammospermophilus leucurus ct
Spermophilus atricapillus 1, v, MM
Tamiasciurus mearnsii 1, SPM
Tamias obscurus ?1, h, SM
Perognathus longimembris ? 1, PF
Chaetodipus baileyi ? 1, RH
Ch. fallax ?? 1, ST
Ch. formosus 1, LC
Ch. penicillatus m, GN
Ch. spinatus m, LC
Ch. arenarius cs
Dipodomys merriami cn
D. gravipes 2, ST
D. spectabilis ?? 1, LC
D. simulans cm, v
Peromyscus eremicus cn
P. eva cs
P. maniculatus 1, ST
Onychomys torridus 1, MP
Neotoma lepida ???t, SR
N. fuscipes ???t, SPM
Oryzomys couesi 1, RC

Sylvilagus audubonii cm, v
S. bachmani cn, v
Lepus californicus ct, v

Birds - non-Passerines (105)

Callipepla californica cn
C. pictus 5-6, SPM

Anser bernicla (= hrota) mm, LSI
Anas strepera m, SJC
A. acuta 2-4, SJC
A. clypeata m, SJC
A. discors v, m, SJC
A. cyanoptera v, m, SJC
Aythya vallisneria ce
A. affinis m, LSI
Melanitta perspicillata cm
Bucephala albeola cm
Oxyura jamaicensis cm

Pandion haliaetus cm
Circus cyaneus 1, RH
Aquila chrysaetos 1, SM
Haliaeetus leucocephalus 1, RH
Accipiter striatus cm
A. cooperi cn
Buteo unicinctus 1, CC
B. albonotatus ?1, ER
B. jamaicensis cn
Caracara plancus cs, v
Falco sparverius ct
F. columbarius ? 1, SG
F. mexicanus cm
F. peregrinus 1, BC

Cathartes aura ct

Gavia pacifica cw
G. immer cm
Oceanodroma microsoma 1, JB
Fregata magnificens ce
Sula leucogaster cs
S. nebouxii ce
Pelecanus erythrorhynchos cm
P. occidentalis ct, v
Phalacrocorax brasilianus 1, SJC !
Ph. auritus cm
Ph. penicillatus cw
Ph. pelagicus mm, LSI
Ardea ibis cs
Ardea rufescens v, cs
A. thula cm
A. alba cm
A. herodias cm
Plegadis falcinellus v, cm
P. albus m, LSI; 3, v, JDC

Podiceps nigricollis cm
P. dominicus m, SJC
P.occidentalis ? 2, LSI
Rallus longirostris ??1, SJC
Gallinula chloropus v, 2, SJC
Fulica americana cm

Pluvialis squatrola cw
Charadrius wilsonia cs
Ch. vociferus cn
Haematopus palliatus 2, SQ
Himantopus mexicanus mm, SQ
Catoptrophorus semipalmatus cm
Heteroscelus incanus 1, JB
Actitis macularia ce
Numenius phaeopus m, SQ
N. longirostris m, SF
Limosa fedoa cm, v
Calidris alba cm
C. alpina cm
C. mauri cw
C. minutilla cs
Limnodromus scolopaceus ?4, LSI
L. griseus ??m, PC
Larus heermanni cm, v
L. atricilla cs
L. philadelphia ce
L. delawarensis cm
L. californicus ce, v
L. argentatus cn
L. livens cs, v
L. glaucescens (= occidentalis) cw
L. glaucescens 4, LSI
Sterna maxima cm
S. caspia cm
S. fosteri ce
S. hirundo 2, SJC
Brachyramphus hypoleucus (= scrippsi) 2, LSI
B. craveri ???1, PC

Columba livia cm
C. fasciata 4, NRS
Zenaida macroura cn
Z. asiatica cs, v
Columbina passerina cs

Geococcyx californianus 1, SI

Tyto alba cm
Bubo virginianus 1, RC
Otus kennicottii 1, TS
Athene whitneyi 1, h, RC
Glaucidium gnoma (= hoskinsii) 1, v, SA
Chordeiles acutipennis 1, r, SA
Phalaenoptilus nuttallii 1, RC

Lampornis xantusii cs, v
Calypte costae ct, v
C. anna 1, ST

Ceryle alcyon 1, SJC

Melanerpes uropygialis cm, v
Colaptes chrysoides cm, v
Picoides scalaris cm

Birds - Passerines (70)

Empidonax wrightii 1, NR
E. difficilis ???1, RC
Sayornis nigricans cm
S. saya cm
Pyrocephalus rubinus 2, MM
Myiarchus cinerascens 1, v, LP
Tyrannus vociferans cm

Lanius ludovicianus cm, v
Vireo huttoni 1, NRS
V. vicinior cs
V. cassinii 1, SJC
V. gilvus 1, NRS
Aphelocoma californica ct
Gymnorhinus cyanocephalus m, SPM
Corvus corax ct
C. cryptoleucus 1, v, CSL !
Mimus polyglottos ct, v
Toxostoma cinerea cs, v
T. arenicola (= lecontei) 1, v, LSI
Sturnus vulgaris cn
Regulus calendula 1, SPM
Polioptila caerulea cm, v
P. californica cm, v
Parus gambeli 1h, SPM
Auriparus flaviceps cm
Psaltria minimus 5-7, NRS
Sitta pygmaea m, v, SPM
Troglodytes aedon cn
T. bewickii 1, SQ
Catherpes mexicanus m, CBF
C. obsoletus cm
Campylorhynchus brunneicapillus cs, v
Sialia mexicana 1, ST
Turdus migratorius (= confinus) 1, v, NR
Tachycineta bicolor cm
T. thalassina cm
Eremophila alpestris cm
Anthus rubescens 1, SQ
Phainopepla nitens cn
Caprodacus mexicanus cm
Carduelis psaltria cm
Passer domesticus cm
Pipilo crissalis ct, v
P. maculatus 1, NRS
Spizella passerina 2, RC
S. ruficeps ?1, NR
S. breweri ??1, LC
S. grammicus m, ST
S. bilineata ct
S. belli m, SQ
S. sandwichensis cm
S. melodia 1, SR
S. gramineus ??6-9, GN
S. savannarum cm
Passerella iliaca 1-2, SPM
Emberiza leucophrys ct
Junco hyemalis m, SPM;
Junco hyemalis (= phaeonotus = bairdii) 1, NRS
Cardinalis cardinalis cs
C. sinuatus cs
Vermivora celata cm
Dendroica nigrescens 1, v, NRS
D. erethachorides (= petechia) 1, BC
Geothlypis beldingii 2, v, SJC
Sturnella neglecta cn
Agelaius phoeniceus cn
A. tricolor m, ST
Quiscalus mexicanus m, RH
C. cyanocephalus cn
Icterus cucullatus cs, v

Reptiles (22), Amphibians (4) & Freshwater Fishes (4)

Phyllodactylus xanti 1, TS
Ph. unctus ?1, SA
Xantusia vigilis 1, CBF
Callisaurus draconoides ct
Scleroporus magister cm
S. hunsackeri NR
S. licki 3, NR
Urosaurus microscutatus cm
U. lahtelai m, CBF
U. nigricaudus m, NR
Petrosaurus mearnsi 1, SM
P. thalassinus 1, PF
Cnemidophorus hyperythrus cs
C. tigris cm
C. labialis m, SQ
Gerrhonotus paucicarinatus 1, NRS

Lichanura trivirgata 1r, CC
Masticopnis aurigulus ?1, SJC
Thamnophis hammondii 1, MM
Elaphe rosaliae ?1, RC
Crotalus mitchellii 1, r, CSL
C. enyo 1, SG

Scaphiopus couchii 1, r, SA
Bufo punctatus 1, MP
Hyla regilla cs
H. cadaverina mm, h, ST

Oncorhynchus mykiss (= nelsoni) 1, SPM
Pimephales promelas m, RH
Cyprinodon lagunae2, NR
Gasteroteus aculeatus 1, ST

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