Probably between The Darkest Hour and Midnight, I think.
she was about 14-15 moons old when she died so i guess shes like 20-30 moons old now.
Brackenfur became a warrior in the book forest of secrets
Featherpaw's warrior name is Feathertail and Stormpaw's warrior name is Stormfur
That depends on your point of view.
feathertail
In The Sight
Cloudtail became a warrior in A Dangerous Path.
Between Sunset and The Sight.
Ferrncloud became a warrior between The Darkest Hour and Firestar's Quest.
Whitewing became a warrior between The New Prophecy and The Power of Three series. She had it put off so Birchfall wouldn't have to be alone in the apprentice den.
Brambleclaw became a warrior in the book "Warriors: The New Prophecy: Midnight" by Erin Hunter. In this book, Brambleclaw completes his warrior training and receives his warrior name, Brambleclaw, after proving his loyalty and skills to his Clanmates. As a warrior, Brambleclaw takes on new responsibilities and duties within ThunderClan, showcasing his growth and dedication to his Clan.
The mountain lion that Feathertail killed in the book "Moonrise" from the Warriors series is called Sharptooth.