There is a complete lack of research on the cold tolerance of parrots, so I have to rely on the thoughts of vets and aviculturists. I’m trying to choose people that are respected in the bird community.
The predominant opinion is that parrots should be kept in a strict climate-controlled range. However, this opinion comes from hundreds of individual people and just saying something is true doesn’t make it true.
I found one of the more amusing opinion pieces on this.
For birds living in our homes, temperatures typically fluctuate very little from one season to the next as we humans like to maintain a relatively constant indoor temperature of 65-72 °F year round.
If your bird gets chilled, warm it on a heating pad, massage its feet to aid circulation and/or put small birds under your clothing to warm them with your body heat.Avian Enrichment: Temperature
Humans don’t even have feathers and we could withstand that in shorts and a T-shirt.… READ THE REST