I think you did a nice job overall, you seem to be quite mindful of the different structural components while still being able to simplify down into basic shapes. I also appreciate the good attention to line quality. I think it's the strongest with the 2nd chicken practice, as well as the page with the two birds. This is where you have fluid yet loose and searching lines combined with a variation of line weight, so these two elements work very well together. One thing I would note would be the use of straight edges, as I think incorporating more of these can help balance some of your drawings, especially the chameleons and flamingo. For the chameleons too, I think you can further break down some of the shapes, thinking about the structural layout--head, arms, body, crest, etc. I realize this is kind of a tricky animal given their blobby nature, but searching for those straight lines can also help pinpoint some of their underlying structure. Well done overall, and I hope this is of some help to you for future practice :)