VOL. I. | Distribution of Land Birds. 339 
It will now be of interest to see whether or not the distribution of 
bird life upon the islands can be explained in the same manner. First, 
in order to have a foundation to work upon, it will be well to give 
as complete lists as possible of the birds of the different islands. 
These lists have been compiled from the following articles: Descrip- 
tion of a New Jay from California,| by H. W. Henshaw; Summer 
Birds of Santa Cruz Island,? by Eli Whitney Blake, Jr.; Notes on 
the Birds of Santa Barbara Islands,* by Clark P. Streator; and 
Birds from the Coasts of Western North America and Adjacent 
Islands, Collected in 1888-89, with Description of New Species,’ 
by Chas. H. Townsend. Such species as are obviously migratory, 
or probably so when no summer record appears, have been omitted: 
SANTA CRUZ ISLAND. 
Zenaidura macroura. Sturnella magna neglecta. 
Halizetus leucocephalus. Carpodacus mexicanus frontalis.° 
Ceryle alcyon. Spizella socialis arizone. 
Colaptes cafer (?). Melospiza fasciata samuelis. 
Trochilus rufus. Pipilo maculatus megalonyx. 
Sayornis nigricans. _ Chelidon erythrogaster. 
Empidonax difficilis. Lanius ludovicianus gambeli.’ 
Otocoris alpestris strigata.° Helminthophila celata lutescens(?)° 
Aphelocoma insularis. Thryothorus bewickii bairdi. 
Corvus corax sinuatus. Salpinctes obsoletus. 
SANTA BARBARA ISLAND. 
Carpodacus mexicanus frontalis. Melospiza fasciata samuelis (?).’ 
SANTA ROSA ISLAND. 
Otocoris alpestris strigata." Pipilo maculatus megalonyx. 
Carpodacus mexicanus frontalis. Helminthophila celata lutescens(?)? 
Melospiza fasciata samuelis (?)." 
. Auk, iii, 4, pp. 452-453- 
Auk, iv, 4+. PP- 328-330. ¥ 
3 Ornithologist and Odlogist, xi, 4, PP- 52-54- 
4 Proc. U. S. Nat. Mus., xiii, pp. 131-142. 
5 Recorded as O. alpestris rubea by Henshaw. 
6 Recorded as C. frontalis rhodocolpus by Blake. 
-? Recorded as L. ludovicianus excubitorides by Blake. 
8 Recorded as H. celata sordida by Townsend. 
® Recorded as M. fasciata graminea by Townsend. 
1 Recorded as O. alpestris insularis by Townsend. 
1 Recorded as M. fasciata clement by Townsend. — 
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