What is the difference between birdfeeders and hand-feeding wildlife?

When birds are visiting birdfeeders they are still foraging for food. This allows birds to retain their natural behaviors while humans can observe them from afar. When animals take food directly from humans the animals brains are being re-trained to learn that humans are a source of food. This can cause the animals to forget how to find food naturally, leading to malnutrition and eventually starvation.