A follower told me they watched a hawk grab a released doves out of the air at a funeral, right in front of the grieving family. "It wasn't inspirational."
Wildlife rehabbers will tell you that's not an unusual outcome.
The white birds sold for wedding and funeral releases aren't doves. They're domestic pigeons bred for appearance with no survival instincts outside a coop. When released, they have a poor ability to navigate, little to no predator awareness, and no way to find food. Hawks, cars, windows, and starvation take most of them within days.
Even professional releases using trained homing pigeons kill birds. Homing pigeons can navigate, but they get picked off by raptors in flight, hit by cars when they land exhausted, and exposed to disease on the trip back. Wildlife rehabbers receive them regularly, emaciated, injured, and sick.
There is no version of this where the birds fly away and live happily somewhere. The reality is a 15-second photo moment that required traumatizing a domestic animal with no ability to survive what comes next.
Bubbles, sparklers, dried flower petals, and ribbon throws all photograph beautifully. None of them end up in a hawk's talons in front of a grieving family.
If someone you know is planning a release, tell them. The tradition sounds meaningful, but the bird's experience of it is not.