The group issued the statement after an 18-month siege of the city of el-Fasher in the western Darfur region.
The US leader has repeatedly accused South Africa of persecuting its white minority - which Pretoria denies.
The farmers have few legal options left, as officials say they will now kill more than 300 ostriches.
Paul Biya has been in power since 1982 - the opposition says the election was rigged.
One of the year's deadliest storms has headed west to Cambodia and Laos after barreling through Vietnam.
Cars, walls and postboxes were defaced, in what appeared to be human blood.