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76 THE CONDOR VoL. XH considerably incubated and Heermann Gulls were both fresh and advanced in incu- bation; one chick just hatcht was found on April 14. Other birds that pass the southern border of the United States, found nesting there, are Audubon Caracara ( Polyborus cheriway ) , Mexican Ground Dove ( Columbigallina passerina pallescens ) and Frazar Oyster-catcher. Tho Carataras were so abundant in Mexico only one nest was located, found by Mr. Virgil Owen on April 10. A few Yellow-crowned Night Herons (JVycticorax violaceus) were observed but were not nesting. Mr. Pingree Osburn shot a Laughing Falcon (JYerpelolheres cachinnans) with a Ridg- way Noddy (Anous stolidus ridgwayi) in its talons, the only ones of either seen. One Duck Hawk (Falco peregrinus anatum) was seen. On the 15th we left the islands in a.little yawl for Las Penas situated on Banderas Bay and some twenty miles away. We spent three weeks there where practically all our collecting was done. At Las Penes the hills come right down to the beach andSback of the hills rise mountains some 4000 feet in elevation. To the north of the town is a flat country in which there are several rivers and many sloughs or esSeros and considerable forest, mostly of cocoanut and other tropical trees. We found this wet fiat land ideal for the herons and they were well repre- sented in both species and numbers. Here we made acquaintance with the Roseate Spoonbill (Ajaia ajaia), a bird of which I believe we have only two records for California. Only fourteen were seen. A pair or so would come down to the river mouth early in the mornings to feed; in feeding they are very graceful and exceedingly quick. We could not locate their breeding grounds as the swamps were simply impenetrable. The Wood Ibis (Tantalus loculator) was present tho sparingly. Mr. Owen took one and I had the good fortune to witness several in their flights. That curious heron, the Boat-bill (Cancroma zeledoni) occupied every bog hole in com- pany with the Black-crowned Night Heron(JVycticorax nyclicorax naevius)Anthony Green Heron (tTutorides virescens anthonyi) Louisiana Heron (ttydranassa tricolor ruficollis) and Little Blue Heron (Florida caerulea), while the Great Blue Heron seemed to keep more 'to the beach. American Egrets (Herodias egrelta)and Snowy Herons (Ardea candidissima) were quite rare. A few were seen in secluded swamps. Anhingas (Anhinga anhinga) Mexican Cormorants (t?hala - crocorax mexicanus), White Ibis ( Guava elba) White-faced Glossy Ibis (t?legadis guarauna) were present in large numbers, tho the first two were solitary in their habits. The latter two fed in flocks, the two species not intermingling however. Mexican Grebes ( Colymbus dominicus brachyplerus), Mexican Jacanas (Jacana spinosa), Blue-winged Teal (Querquedula discors) and American Coots (Fulica americana) were common. The only rail seen was the Mexican King Rail (tr?allus lenuiroslris) a single specimen being taken by Mr. Osburn at San Blas. Going from the swamps to the beach at the river mouth, old familiar friends could be found such as Royal Terns (Sterna maxima), Least Terns (Slerna antillarum), Black-neckt Stilts ( IYimanlopus mexicanus) Least Sandpipers (t?isobz'a minutilla) Greater Yellow-legs (Totanus melanoleucus), Yellow-legs (Totanus flavipes), Western Willets ( Syruphernia semipalmata inornata), Hudsonian Curlew (JVume- nius hudsonicus), Long-billed Curlew ( JVumenius longirostris), Killdeer( Oxyechus voctferus), Snowy Plover (Aegialilis nivosa) and Spotted Sandpipers (Actiris macularia). Two Black Skimmers (tr?ynchops nigra) were seen together on one occasion, and one was secured. In the cocoanut groves and around the mangoe trees were the homes of Finsch Parrots ( Amazona finschi), White-fronted Parrots (Amazona albzfrons), Red-and- blue-headed Parakeets (Conurus canicularis) and the Military Macaw (Ara mill-