Seems this Redshank has had enough of the limelight for one day and has decided to head for the exit behind that big rock, doing their best John Cleese walk(go look up Monty Python if you are below a certain age).
It was great to go sit on a local beach for a couple of hours letting all the waders go about there business.
I have said it before(probably numerous times) don't go chasing wildlife for a photograph, all you will achieve is chasing them off. Most animal, yes even birds, are creatures of habit. If you see them going back and forth to a certain area, make your way slowly and carefully towards that area when they have moved away. Try not to get too close, you will know if you are getting close as there behaviour will change and they will look alert.
Now find a comfy spot and park your butt. Only move if/when you have to and move slowly. After a while you will find that they become quite comfortable and happily share their space with you.
A super long lens is not required, but I would try to use at least a 300mm as a good starting point. This photo was taken at 350mm on a 1.5 crop sensor, so 500mm equivalent and slightly cropped for composition.