Bird subspecies that you can see the difference of in their appearance. A large amount of bird subspecies are created because of genetic studies and various things that are useless in the field like skull size and tail length by inches. I've done most of North america so far.
![](https://inaturalist.nz/assets/logo-eee-15px-8f26cb7404257fa9b8ee143ca65be95b53e98e56f81ff1678848b9e3ae2e13ee.png)