Table 1: The Species of Conservation importance in the Republic of 
Yemen according to criteria of entry (see text). 
END Endemic 
IB Internationally significant breeder >20% of world range/ 
population 
IW Internationally significant wintering /non-breeding >20% world 
range/ population 
RB Regionally significant breeder >20% of Arabian* population 
RW Regionally significant non-breeder >20% of Arabian* population 
Rare Rare breeder (<300 pairs) best guess 
DB Declining breeder 
BL Localised breeder occurring in a small numbers of areas /specialised 
habitats 
WL Localised non-breeder, excluding species which number <1000 
(eg grebes, ducks which quickly respond to man-made or 
temporary wetlands) 
RED A World Red Data Species (in Collar & Andrew, 1988) 
Arabia is defined as the whole Arabian Peninsula north to the 
Mediterranean and including Syria and Iraq. 
Little Grebe Tadiybaptus ruficollis Rare BL 
Jouanin's Petrel Bulireria fallax IW 
Audubon's Shearwater Puffimis Iheminicri RW 
Red-billed Tropicbird Phaethon adherens RB? BL 
Masked Booby Sula dactylatra RB BL 
Brown Booby Sula leucngaster RB BL 
Pink-backed Pelican Pelecanus rufescens RB BL 
Green-backed Heron Butorides siriatus BL 
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