Forbes-Watson's Swift (Apus berliozi) [XC543748]
by Alain Malengreau from Inhassoro, Inhassoro, Inhambane, Mozambique (call, flight call, flight calls)
Forbes-Watson's Swift (Apus berliozi) [XC488728]
by Etienne Marais from Khawr Rawi, Oman (call, flight call)
Subspecies
Forms superspecies with African Swift (Apus barbatus), Pallid Swift (Apus pallidus) and Bradfield's Swift (Apus bradfieldi). Birds breeding in south-eastern Somalia (Hal Hambo) are apparently intermediate between nominate and subspecies bensoni.
The following 2 subspecies are recognised:
berliozi Ripley, 1965 - Socotra.
bensoni Brooke, 1969 - Somalia. Winters south to coastal Kenya.