Invalid words inside valid words

Using Google Chrome to access Firefly Beta on a Windows 10 machine.

I'm attempting to create an image of a Pacific Long-tailed Cuckoo and after a process of elimination have found that the word "Cuckoo" apparently goes against community guidelines. I imagine the invalid word is "Cuck" and the "oo" I guess must be being treated like the "er" to "F*ck".

Simply entering "Cuckoo" as the generative term reproduces this result, producing no relevant imagery where I want an image of a cuckoo. Obviously I don't want a picture of a Cuck, or any other kind of bird than a Pacific Long-tailed Cuckoo. Entering "bird" instead of "Cuckoo" produces images similar to but not exact as the plumage is a huge factor here.

This also makes me wonder about how other words are being treated that can be cut down to form a different word that don't go against community guidelines - transplant could become trans or plant depending on context I guess.