My husband and I bought our first chicks this afternoon. We are brand new to all of this. They are older "chicks", I think. They are 6-8 weeks old and have some feathers. We have them in a room with a heater set to 90 degrees. They are huddled in a corner. Are they cold? Should we add a heat lamp? Are they still adjusting to their new digs since they just moved in this afternoon? Any insights from you experienced folk would be appreciated!