Setting aside the fact that the human stomach couldn't hold and process 1000 Kiwis in a 24-hour period, kiwis are high in Vitamin K, and one of the symptoms of Vitamin K toxicity is excessive blood clot formation, which can lead to thrombosis in people who are sensitive to it. But you would be too busy sitting on the toilet with the stupendous diarrhea you would get from all that Vitamin C.

I rather think you'd choke on the feathers long before managing to eat 1000 kiwis.

To much of anything isn't good!!!!

1000? a day? its very possible!