Keeping a home cool during the Summer can be an undertaking. But, it is possible. Moving Hot air out and Cool air in during the night and early morning is the goal. There are a couple of tricks that you can use:
Know the placement of your home based on a compass, i.e. N, S, E, W. Now, what direction is the Wind coming from. If the evening weather report states that the Wind is coming from the West and will range from 3 to 6 mph. So what! Well the Wind will develop pressure on that side of the house that the Wind is coming from and will create a vacuum on the opposite side of the house. By opening the windows on those two sides will result in air moving into your home and out the other side. So, placements of the fans inside the home to support that air movement will increase the transfer of air. So, by setting a fan to push air out of the house will improve air movement into the house, because it will create a vacuum on the side of the house that the Wind is coming from. The greater the temperature difference between the outside of the house and inside, the easier it is to exchange air.
Once the outside air temperature is near or the same as the inside air, leaving the windows open will only add heat inside the house.
Window covers, blinds, etc... close them on the Sunny side of the house in the Summer and open them in the Winter - When the Sun is Shining!
Heat stroke is a danger for Human and Parrots alike. Be very mindful as inside temperatures rise above 85 degrees. Keep a very close tab on everyone when inside temperatures rise to 90 and above - Start Looking for Cooling Stations!!!
Cold is to the bone and temperatures of 60 degrees in one area of the home can see much lower in other areas. It becomes important to measure temperatures where Humans and Parrots are.