The protected birds had no other physical injuries aside from stings. It was the first known attack at Boulders Beach, which attracts more than 60,000 tourists a year.

Some species quickly responded to lower levels of human activity, but whether their return to urban areas is good for them—or not—remains unclear.

Stumbling across a bird emphatically calling and appearing to hold a broken wing is a good sign of a nearby nest—and a clue that you may be too close. Should you encounter a displaying bird, back up ...

The award-winning photographer, author and conservationist discusses his new book in the series he founded, the “Photo Ark,” a 25-year documentary project focused on saving species and habitats.