We have to be careful as birders, with footwear. I go for boots that will help with long walks, but many are very inappropriate for birding. We are unique, in that we don't just go for long walks along the footpaths. We tend to wade through brambles and go off the track slightly (within reason obviously), nip through barbed wire fences, crawl around if taking photos, etc. All of which could destroy a very good pair of walking boots.
Similarly, I suspect a pair of wellies could be totally written off on a day on one of my local birding walks!
I had "gaiters", which were kevlar and pretty much converted walking boots into knee-high wellies, and protected them from all conditions, except water sadly.