Well I'm new to photography too so my advice may not be accurate, but I'll give it to you anyways...haha
#1- Too much empty uninteresting space. The heron seems to be blown out.
#2- You couldn't really control it, but it would have been nice if the Canada goose was facing you. Also the missing part of the wing kinda bothers me.
#4- The background is too busy with sticks and there is also a stick that obstructs the view of the Cardinal. Also, the bird seems a few stops underexposed and it has a weird (yellow?) tinge on its body. The picture also seems to lack detail and the eye seems to be missing...
In general, I think the pictures are not as sharp as they should be.
Keep in mind this is just my opinion haha.