A second full moon of the month—a blue moon—lights up the sky on May 31. The phrase “once in a blue moon” refers to the rarity of two full moons in one month. It continues the pattern of extra-low tides in the early mornings.
Another recent rare occurrence were two brown pelicans landing on park trails. This species is returning north to spend the summer here but usually stays in the bays and estuaries. The…