3 KNOWING BIRDS THROUGH STORIES 

 Key to the Families of Longipennes 



RYNCHOPIDJE Skimmers. 



With the lower mandible much longer than the upper. 

 LARID^E Gulls and Terns. 



With the lower mandible not longer than the upper, and with the upper 



mandible in one piece. 

 STERCORARIID-E Jaegers. 



With the upper mandible composed of three pieces, one a saddle-like 



basal portion. 



Key to the Families of Tubinares 



DiOMEDEiD2E Albatrosses. 



With the nasal tubes separated and situated on sides of the upper 



mandible. 

 PKOCELLARIID^E Petrels and Shearwaters. 



With the nasal tubes united and situated on the top of the basal 



portion of the upper mandible. 



