IV INTRODUCTION. 



favourable facilities for noting the times of 

 arrival and departure of our migratory birds, 



The sources whence my materials have been 

 drawn are thus principally my own notes and 

 observations, extending over a period of ten 

 years. I am also greatly indebted to those 

 notices of rare and accidental visitants, captured 

 principally in East Yorkshire, and recorded during 

 the same period in the pages of the 'Zoologist/ 

 in which journal also many of my own notes and 

 remarks on our birds in this work have already 

 appeared, and, lastly, to a paper on the ornitho- 

 logy of Lincolnshire by the Rev. R. P. Alingtori, 

 of Swinhope Rectory, which appeared in the 

 'Naturalist' for January 1852. 



To W. W. Boulton, Esq., M.R.C.S., of Beverley, 

 Mr. Thomas Boynton, of Ulrorne Grange near 

 Bridlington, the Rev. R. P. Alington, of Swin- 

 hope Rectory, and Mr. J. H. Gurney, Jun., I 

 must express my best acknowledgments for valu- 

 able information rendered and many inquiries 

 answered since the commencement of this notice, 

 respecting the ornithology of the district; my 

 thanks are, indeed, especially due to Mr. Gurney 

 for many original and interesting communications 

 bearing on the ornithology of Lincolnshire ; and I 



