PREFACE. 



It will be neceffary, however, to remark, that on account of 

 the uncertainty of the return of the laft circumnavigating fhips, 

 the Accipitrine order, here firft publifhed, was printed off before 

 their arrival in England, by which means a few new fpecies of 

 the Falcon genus have been excluded from their place. This 

 has, of neceffity, obliged us to introduce them by means of du- 

 plicate pages, marked with an afterifk. 



To each Genus wilL be joined one copper-plate at leaft, of 

 fome new Bird not figured before, if poffible, for two reafons; 

 the one to po<int out to the eye of the lefs-informed Naturalift, 

 wherein one genus differs from another ; the other, to add fome- 

 what to the flock of engravings in Ornithology. 



In a work of this kind, it will be expected, that we fhould be- 

 gin with an Introduction on the Nature of the Feathered Cre- 

 ation; fuch as general manners, nidification, incubation, migra- 

 tion of particular fpecies, and fuch-like ; but this fubjedt has 

 been treated of in another work * in the moft ample manner, and 

 will therefore make it altogether unneceffary, becaufe all that I 

 could do on this head, mull prove only a repetition of what is 

 there mentioned. 



I have, therefore, nothing more to add, but a jufl acknowledg- 

 ment of the very great obligations I am under to many of my 



* The work I here allude to, is the Genera of Birds, by Thomas Pennant, 

 Efq; in which will be found every thing neceffary for the reader's information 

 on this head. 



friends, 



