In exchange, he had filmed nearly 100 species of birds, including four or five complete stories from hatching and moulting to mating, but because lacked funds, he still hadn't done the final work of cutting, dubbing and script writing.
如此換得的代價是近百種鳥類的紀錄片，而且其中有四、五種由繁殖、育雛到成鳥交配等，已可剪集完整的故事；但因缺乏經費，仍未做需要剪輯、配音、編劇本等收尾工作。