CALIFORNIA WATER BIRDS.— No. V.^ 



Vicinity of Monterey in May and Early June, 

 by leverett m. loomis, 



Curator of tlic Department of Ornithology. 



CONTENTS. 



Page. 



I. Migration 350 



Summary of Movements 350 



Bird Waves 350 



Pauses hi Migration 351 



Retrograde Migration 351 



Overflow from Southern Breeding Grounds 351 



Cause of Return Migration 352 



II. General Observations 355 



The RESULTS of a study of the water birds off Monterey 

 from May i to June 12, 1897, are presented in this paper, 

 together with some reflections upon the cause of return 

 migration and some observations upon specimens. That 

 the birds of the harbor might be observed more fully than 

 on previous occasions, the town of Monterey was selected 

 as a base of operations, and from this vantage-point week- 

 day excursions were made upon the bay and ocean, the 

 voyages extending several miles beyond Point Pinos when 

 the weather permitted. May proved to be a windy month 

 and at times there were rather heavy seas. However, only 

 on six days did wind or waves prevent the boat from reach- 

 ing the ocean. With the advent of June low fogs began to 

 prevail. 



1 'No. I.— Monterey and Vicinity from the Middle of June to the End of August,' 

 Proc. Calif. Acad. Sci., 2nd Ser., Vol. V, June 19, 1895, pp. 177-224, i map. 



'No. II. — Vicinity of Monterey in Midwinter,' ibid., Vol. VI, Feb. 21, 1S96, pp. 1-30, 



1 map. 



'No. III. — South Farallon Island in July,' ibid.. Vol. VI, Aug. 29, 1896, pp. 353-366, 



2 maps. 



'No. IV.— Vicinity of Monterey in Autumn,' ibid., 3rd Ser., Zool., Vol. II, No. 3, 

 Feb. 12, 1900, pp. 277-322, I map. 



[349] December 24, 1900. 



