Why so many dead birds on Michaelmas Cay?

["Tony Palliser" <>]

A couple of South Africa enthusiasts asked me recently "why were there so
many dead birds on Michaelmas Cay"?  In fact they reported that the beaches
around this small cay were covered in them to such a degree that at least
one tourist operator was going ashore before the visitors to clear up the
carcasses each  day to avoid embarrassment.   Anyone have any ideas? is this
normal at such nesting sites?  Or could this popular destination be over
exploited?  
 
Regards,
Tony
 
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