Taxonomy is usually a term used to refer to a way of categorising things. This includes (but is not limited to) its use in categorising living things through a hierarchical structure.
Variation is an inevitable part of language and in describing living organisms such as birds, however, the variation in hierarchical classification is likely to continue despite the best efforts for consensus. Since globalisation and the spread of information is more extensive than ever, there’s even more reason to include and understand variation, and to build tools that enable us to share this information with a level of common understanding.
Birda makes use of AviList, a common standard developed in 2025 and used as a global taxonomy by all the major birding platforms.