We provide the trained model (yolo v3) for detecting the parts of birds. Thought the model is trained on CUB200-2011 bird dataset, you can use it to detect any birds. If you are interested, please refer to work:
@article{ author = {Feng, Hui and Wang, Shanshan and Ge, Shuzhi Sam}, title = {Fine-grained visual recognition with salient feature detection}, journal = {arXiv:1808.03935}, year = {2018}, type = {Journal Article} }