The shift from spring to summer is one of the trickiest periods in a poultry operation. Temperatures swing wildly between day and night. Rain picks up. Humidity inside the house climbs, and that creates ideal conditions for bacteria, parasites, and mold to multiply fast. At the same time, birds are dealing with temperature stress, their immune systems get inconsistent, and production numbers can start slipping. If you’ve been raising poultry for any length of time, you know what happens next: respiratory coughs show up, droppings get loose, egg quality drops, and the whole flock seems off. The frustrating part is that most of these problems are preventable. Here is a…