CUB-200-2011 dataset by classes folder

From: http://www.vision.caltech.edu/visipedia/CUB-200-2011.html

Download from Kaggle:

https://www.kaggle.com/cyizhuo/cub-200-2011-by-classes-folder

国内下载：

Github 镜像：https://hub.fastgit.org/cyizhuo/CUB-200-2011-dataset

百度：https://aistudio.baidu.com/aistudio/datasetdetail/85759