Pasadena Academy of Sciences. Publication II. 



times seen flying northwestward in migration, and similarly in the lat- 

 ter part of September long, straggling flocks are observed at a mod- 

 erate height, flying in a southeasterly direction. This species appar- 

 ently breeds in considerable numbers, but is confined to the valleys and 

 lowlands. The usual time of egg-laying is in the latter part of April 

 and early May. L- Chambers reports taking fresh eggs as late as June 

 I , near Santa Monica. Sets are of two or three. 



121 — j^8. Arckibuteo ferncgineus (Licht. ). 



FerrugiQOus Roughj-leg. 

 Tolerably common for a hawk, appearing mostly in the fall. A 

 few undoubtedly breed, though I have failed to learn of any authentic 

 nesting data. 



122 — 349- Aqiiila chrysdelos (Linn.). 



Golden Eagle. 

 Tolerably common in the mountainous parts of the count}'. Nests 

 are built in tall fir trees and are usually inaccessible; at least no sets 

 have been taken in this county, to my knowledge. Full-fledged young 

 appear in July. 



123 — J52. Haliceetus leucocephalus (I,ian.). 



Bald Eagle. 



Tolerably common in certain localities along the coast, and of cas- 

 ual occurrenc inland as far as Pasadena. L. Chambers took a set of 

 two considerably incubated eggs near Santa Monica, March 13, '97. 

 The nest was about forty feet above the ground, in a large sycamore 

 near the beach. Evan Davis secured a set of two near Santa Ana, 

 March 5, '95. 

 124 — j^^. Falco mexicamts Schleg. 



Prairie Falcon. 



Tolerably common in fall and winter in the foothill and mesa 

 regions. 



125 — j§6. Falco peregrijius atiatum (Bonap.). 



DucK Hawk. 



Of occasional occurrence along the coast and over the lowlands 

 further inland. A pair is said to have formerly nested in one of the 

 caves in Eagle Rock, near Pasadena. 



126 — jgy. Falco cohiiubarius L,inn. 



Pigeon Hawk. 

 Tolerably common during fall and winter in the foothill and mesa 

 regions. 



127 — j6oa. Falco sparverius deserticolus Mearns. 

 Desert Sparrow Hawk.- 

 Abundant throughout the county, from the coast to the highest 

 mountains. In the lowlands the Sparrow Hawk is most frequently 

 noticed perched on telegraph poles along the railroads, or hovering 

 over the fields on the lookout for its prey. It feeds principally on in- 

 sects, grasshoppers in particular, and is thus beneficial to the farmer, 

 and in this vicinity is seldom persecuted as are the larger hawks. 



