What is that sound walking to the outhouse in the dark of night?! It’s a Leach’s Storm-Petrel! Its call is a spooky one to hear for a person like me unacquainted with the “giggling” sound. I heard my first petrel call here on Petit Manan. Pretty cool!
While the other inhabitants of the island are roosting at night, Leach’s Storm-Petrels are active searching for a mate and a burrow dug from the soil. They are a secretive, nocturnal, and pelagic species only returning to land to breed and active at night to avoid predation. Petrels lay one egg that is incubated for 37-50 days and chicks fledge in September or October.
Julia with a Leach’s Storm-Petrel adult
Early in the season, we venture out in search of petrel burrows. Our goal is to mark 20 active burrows with colored flags. How do you know it’s active? You reach into the burrow (1-3 feet in length) to find a nest cup, nesting material, or a petrel! Often burrows curve, so a burrow camera can be used to reach where your whole arm cannot. One indication of Leach’s Storm-Petrels is their musty smell at the entrance of a burrow.
Wayne smells a petrel
Julia holding the camera and Anna wearing the viewing screen
Burrow camera in use
Later in the season we will return to the flagged burrows and determine the presence of an egg. Then return again to check for a hatched chick. In the meantime, we will continue with our tern and alcid activities. Look for Petit Manan’s next post for some exciting news!