Egg Shell and Membrane Removal

After the hatch of their first chick, it is very common for adult loons to remove the membrane from the first hatched egg and any attached large pieces of eggshell from their nest. This behavior has been widely documented here in New Hampshire, both on LPC's Live Loon Cams (see video below) and by wildlife photographers, as well as by biologists in the field. Why do loons remove shells and membranes from their nests when many other bird species do not perform this behavior?

 

World Migratory Bird Day 2023 highlights impact of the growing water crisis on migratory birds

BOULDER/BONN/INCHEON, 13 May 2023 – Water and its importance to migratory birds – and the increasing threats to both water quality and quantity -  is the focus of this year’s World Migratory Bird Day, a global campaign that aims to raise awareness of migratory birds and the need for international cooperation to conserve them.

 

Body Adaptations

Loons have evolved to be highly specialized for life in the water. They have a number of adaptations that minimize resistance and reduce drag, making them fast and agile when swimming and diving and enabling them to be excellent fishers. Anyone who has seen a loon in the water knows how impressive their swimming ability is—it is not uncommon for a loon to dive and resurface hundreds of feet away from where it was last seen in a short amount of time.

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