With a high body temperature, extremely good insulation, and limited ways to dissipate heat, one of the biggest risks for birds in hot weather is simply overheating. Maintaining a normal activity level in hundred-degree heat is potentially fatal for a bird, and some of the strategies birds use to keep cool can dramatically change their overall appearance.
The activity patterns birds employ to survive the heat are generally what we would call “common sense,” and your strategies for finding birds in hot weather are straightforward. Birds are most active in the cooler temperatures of very early morning, so the earlier you can start birding, the better. As the day warms up, birds slow down and seek shade — especially shade with water. A small pond or stream (or a bird bath) shaded by trees and shrubs will attract birds throughout the day, and if you can find a shady place to sit where you can see the birds without disturbing them, you’ll have a really pleasant time.