I didn't get but a small photo on the top one. Take it first along with what your saying.
I'm even more convinced now that your looking at immaturity. That's not bad, that's normal. She's found something she really likes and is trying to figure out how to get it. Over a period of time and left to her own devices she'll quit trying plovers all together. After being introduced to birds and shown how to get them AND what pleases you, she won't go back to plovers or even "dicky" birds. Dicky birds being any off game bird.
I said she'll quit plovers over a period of time. That'll happen because the plover's will TEACH her she can't catch them. Pointing is not a natural instinct, it's a trait developed by man to suit his own need's. Hunting is the natural instinct,
born of the necessity to eat. She hasn't been taught yet how to make pointing work for her but soon enough you'll teach her and then the creaping will stop IF you do your job right, that's teach her how to get the bird on YOUR term's.
The second photo also show indecision. She want's to keep going but you told her "whoa". She's stopped and probally standing still but should be standing up unless, you whoa'ed her on a bird she was creeping up on, I don't know. If you did, don't whoa her on birds yet. I said "yet". That will come in time. Whoa is a command that should be taught away from birds and without distractions. "whoa" means one thing and one thing only; "stop and stand still!" If a young dog is constently "whoa'ed" in a situtation where it has to great a temptation to leave, sooner or later it'll do as it pleases, usually after it mature's and start's testing it's own wing's. Then you run the risk of yelling "whoa" at a dog chashing. You yell whoa because your sure the dog know's what you want but your getting excited and yelling louder because your once well mannered dog is disobeying you. The more excited you get while the dog is chasing, the harder it chases. Next comes the next mistake. The place orentated theory. The dog comes back, you drag it back over to the starting point, as you percieve it, shake it up some and scold it saying whoa.
Number of things wrong there. First the dog came to you, likely because you called it. What did you do? You grabbed it and dragged it somewhere else scolding it. Question. Are you trying to teach it not to come or fix a problem? If every time your mom called you she did something similar, how long befor you hide rather than come to mom? I'm using "you" here as a generic term, Please don't take that personnel.
The next thing that happens is that you start scolding the dog in the general area of where it started chasing. Does that mean you don't want the bird? Obviously the dog did not fully understand the command and you kept yelling it while the dog was having the time of it's life; mixed signals!
I've been thinking lately and believe that far to many people have a problem because they believe certain trait's to be instinct's. A canine has few natural instinct's; to hunt first- pup hit's the ground, mom's tears off the sac and chew's off the cord, gives it a good licking and then.........this minutes old pup with eyes closed goes looking for AND FINDS a teat the size of an eraser burried in hair. That is instinct. The next instinct is defence; I would caution you about appoaching any baby wild animal with mom around. Even a bird will often attack you in it's own way. The next instinct is to eat; born of the necisity to preserve it's own life. Finally the instinct to reproduce to preserve it's own species. Everything else we see in our dog's are trait's bred into and developed by man to use some of the dog's instincts to accomplish mans own needs or desires.
Thru training we develope the traits. We must or pure instinct's will take over and the dog's will have no other purpose than to lay on the couch and lick itself!
Again I may have gotten carried away, sorry. From what you've had to say, your doing well. From what I've seen, your dog is still a pup, she's desperately trying to grow up. Let her!!!!!!!! Learn to read what shrs telling you with her body and her attitude, she'll tell you when it's ready to move on and that doesn't sound like it's to far off.