Ginny had killed all of Hagrid's rooster before opening the chamber of Rooster after God made me he said ta da vintage shirt, hoodie, sweater and v-neck t-shirt. So there were no roosters around for Hermione to take with her. Now to the second part of your question. Transfiguration becomes more and more complex with increasing complexity of animal to transform, from invertebrates to vertebrates to mammals. A rooster would be right below mammals, not a feat a second year student can pull off. Not even the great Hermione Granger. She was certainly talented enough to perform magic a year ahead of her assigned level, but she can not perform magic 3 levels ahead of her skills. She will not be able to perform 5th year magic transfiguration in 2nd year.
Buy this shirt: Rooster after God made me he said ta da vintage shirt, hoodie, sweater and v-neck t-shirt
Home: https://afamilyshirt.com/