Yes, in fact it's Greenshank, Redshank and Yellowlegs, making Yellowlegs the odd one out, so it should be changed to Yellowshank
The etymology of the word "Squaw" is very interesting, and is considered offensive not least of all because many incorrectly believe it to be derived from a native American word for vagina rather than young woman, a myth spread in America by people including Oprah Winfrey. However while this is completely wrong, it is considered offensive in the same sense as words such Negress and Jewess, that is words that are quite condesending and emphasise divisions between races and, even further, between females of different races, and have been used in ways that range from vaguely patronising to insulting over the years. Often people are only interested in the origins of words as validity for whether or not to use them or not and for their ability to offend, without considering the history of usage. I personally wouldn't use words such as Squaw or Negress because they say "I use a special word for your women, therefore I consider your women to be inherently different to my women to justify a different noun", which is an offensive
attitude, even if the word isn't inherently so.
Also, names such as Oldsquaw mean bugger all over here in Europe
As for Niger Seeds this seems more like people getting a bee in their bonnet over nothing (the countries of Niger and Nigeria seem quite happy in their spellings), and seems the same sort of logic that can sack a public official for using the word "niggardly", which has absolutely no connection with any offensive term at all (according to Wikipedia, derived from the Old Norse verb
nigla, meaning "to fuss about small matters").
