what is the highest temperature that african greys can stand.

I don't know the official temp.
At 90 degrees...When I take Boca outside, he starts panting after 20 minutes.
Keep in mind though, my house is air conditioned at 80 degrees so that is what my birds are use to.

True enough Susan...it's important to note that birds can easily overheat, and they do get used to whatever temperature they are most kept in. I think the best general rule to follow is no extremes...no extreme cold or hot. And of course watch the birds body language....is it panting, shivering/shaking, etc. I am sure other members will have a more accurate answer with greys specifically in mind...but in general you should watch for any of these signs. And like any other animal, please provide lots of fresh water and plenty of shade if the bird is going to be outside on a hot day.

I just surfed the net for an answer...nothing.
I agree with you Kris.
If any bird is in the wild, their tolerance to environmental conditions would be much higher than a companion bird.

Jeet, since you are housing your birds in an outdoor aviary at all times, you will want to make sure there is a shaded area at all times and freshwater. What are the high and low temps in your country?

from many people i have spoken too and been given advice from some very knowlegeable ones they all say the same thing
what ever temperture you are comfy with if you get hot and sticky they will be over heating if you find it cold they will also
take into account also that if a grey or a too especially gets too warm it drys there feathers out very quickly making there dust more irreatant to them and you also

You thinking of baking him????
(Sorry in advance! Couldn't resist)

Between 70 and 80 Farenheit are at their most comfortable but they can stand lows of 66 and highs of 90 only not for very long.

We should want our birds to be as comfortable as truly possible - regardless of where we live, therefore we should do our best to provide them with temperatures that are very similar to their region of origin. We should find out these seasonal ranges and then imitate them by using our human inventions such as air-conditioning, heating and humidity controls (etc.) rather than simply settling for what our birds can just tolerate.

My flock of Greys do quite well here in sunny, hot and humid Florida. Most spend the majority of their yearly time outside where temps. are around 90 degrees this time of yr. but fluctuate between short periods of low temps. in the 40s to short periods of high temps. near the mid 90s with a rare dip into the high 30s and a rare dip into the high 90s. There is plenty of shade here at the Compound and helpful breezes, cool showers (from the hose when needed in addition to natural rain showers) to assist them in feeling comfy. They all seem like happy campers to me.

And there you have it folks...Joel would know best of any of us.