When do falconiforms usually begin hunting during the day?

Falconiforms are diurnal, meaning they are primarily active during the day, though the specific time they begin hunting varies by species and environmental conditions.123

Activity often begins shortly after dawn with short "warming-up" flights, but serious hunting typically commences later. The timing of this transition depends on several factors:1

• Species Size: Smaller species are often capable of flight soon after dawn. In contrast, large, heavy species—particularly vultures—generally do not begin foraging until later in the day, once thermal activity generates the updrafts necessary for them to fly.1
• Prey Activity: Some accipiters begin hunting at daybreak to coincide with the peak activity periods of their avian prey.1
• Flight Style: Certain specialized birds, such as harriers, are capable of flying easily at any time during the day.1
• Environmental Factors: While many species start their day after dawn, some falcons and sparrowhawks are active at twilight, and a few species have been recorded feeding at night under specific conditions.1