Hi Paulina, Long time no see. How have you been?
Can you get a thermometer for your room so you know exactly what temp it is? I try to keep the room my guys are in at around 70 degrees too.
What kind of heat do you have in your house? Is the heat duct/register to your room possibly not working right?
hmm Can you get an electric heater with a thermostat for your room and keep it set at at least 65 to maybe 70 degrees? I got one so that I can turn out heat down at night and it works great for keeping them warm at night. (If you do use an electric heater it has to be ceramic)A lamp, like a desk lamp, near her cage to keep her warm while she's in her cage? I do that too sometimes, esp after a bath. Or cover with an electric blanket or use a hating pad in the bottom of cage under the grate at night?
Love your avi slide show BTW