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Categories are human inventions that are often useful in systemizing nature. Nature, however, is under no obligation to respect them, and often does not. Misunderstanding this is "antithetical to science." There is no blueprint for the "correct hummingbird" male or female. It is whatever results...

...from a developmental process starting with a single cell in a particular environment. It may be well adapted or not. It may or may not be capable of reproduction. It is most likely to be something we'd call either a "normal" male or female hummingbird. But if it varies, that's failure of our ...

... words for expressing what it is, not a failure of a process that does not have predefined failure and success criteria.