SEABIRDS — GILL 



21 



m s te rd a m I. 

 t. Paul I. 



Figure 2. — Regions of observed seabird abundance in the western Indian Ocean. 



of the Mascarene Islands on our 55° E transect, whereas in May 

 large flocks were present at 06°46' N on this same longitude, as well 

 as the seas south to the Seychelles and southwest to the African coast. 

 Other observers (e.g., Bailey, in prep.) report a similar seasonality in 

 their observations of sooty terns in this region. 



The Mascarene region is of particular interest because it is the only 

 place in the tropical or subtropical Indian Ocean where breeding 



