 Kakapo diet changes according to the season . The plants eaten most frequently during the year include some species of <unk> <unk> , <unk> <unk> , <unk> <unk> , <unk> minus , <unk> <unk> , <unk> <unk> , <unk> <unk> , <unk> <unk> and <unk> <unk> . Individual plants of the same species are often treated differently . Kakapo leave conspicuous evidence of their feeding activities , over feeding areas that range between 10 by 10 metres ( 30 ft × 30 ft ) and 50 by 100 metres ( 160 ft × 330 ft ) per individual . Kakapo feeding grounds almost always host <unk> and yellow silver pine <unk> . 
