Stopping my dog from barking at wildlife along our fences?

Find what motivates your dog. Some dogs do anything for food. Some dogs do anything for Toys. Some do anything for a good petting. Some do anything for only one type of food, like cheese, or hotdog. Some only have interest in training for 5 minutes at a time, and others can go for an hour. Figure out what your dog is willing to work for, and then work with her in sessions that are no longer than she can tolerate. How to train your dog properly https://tr.im/8mL4l

Sign up for a dog obedience training class. It will not train your dog. It will give you training on how you can train your dog. Most people understand the idea of training, but there is a right and a wrong way to do it, and there is good and bad technique. Timing and consistency is very important, and it helps to have feedback of someone watching you who can help you improve your technique to get more efficient results with your dog.

However, she may be somewhat anxious around other dogs, sort of like the shy kid on the playground. She will benefit from continuing what you are doing as far as asking her to sit before entering, but there are more things along those lines that will help her to calmly go in and out of the dog park. She may also benefit from going in short bursts, or only when fewer dogs are present, or avoiding times when other dogs that make her nervous are present. Maybe she just plays loud - my brother's dog is this way - or maybe she is a dogpark bully - sorry it is possible. But more likely she is just a little anxious around new dogs and she wants to play but just doesn't quite know how to do that and still feel comfortable. Don't be surprised if your dog does not actually like the dog park, and maybe she would get more enjoyment and less stress out of simply going for a good walk somewhere else.

A wagging tail does not mean that your dog is happy or even comfortable with the situation. It means your dog is emotionally aroused. This could be a happy arousal, or it could be a nervous arousal, or it could be an aggressive arousal. Go youtube it, there are plenty of videos of 'vicious' dogs who are throwing a very aggressive fit of barking and snarling while their tail is wagging vigorously. Even police dogs who are not let off the leash to chase down a suspect can be lunging and barking and snarling, and their tails are still going.

Stop leaving the dog outside at night!

Since you can't seem to train the dog, you can either get a bark collar or get her de-barked. Or keep her inside, of course, when you aren't supervising and training her to shut up!

You could spray her with water every single time she does and tell her no barking.

You could contact a trainer to get some advice

What I do to my dog when he is in the kitchen I spray him with water, and when he is bad I sometimes add some lemon juice and make sure it doesn't get in his eyes or nose. Hope this helps!

Ever hear of training your ill bred dog? Try it. Or seek professional help for yourself on how to train it properly. You are suppose to be out there supervising at all times anyway.

No dog should ever be left outside unsupervised unless you want it, poisoned, stolen, beaten, sold as a bait dog, sold to a lab, eaten by predators etc.