Keep away from occupied bird nests. Your presence may effectively evict the occupant. A frightened bird may abandon its home permanently. Hatchlings also are susceptible to temperature changes, and parents may not return to feed them. If you are with a group, please follow your leader's suggestions.
Some areas are off limits.
Osprey and pelican colonies are especially vulnerable to disturbance and should not be visited up close. Usually a cautious and planned slow approach, followed by sitting quietly at a safe distance from the colonies, will enable you to make good observations and take excellent photographs. Remember, a great photo means very little if the animals are killed as a result. Whenever possible, keep to the established trails. Try to walk in a single file.