ANHINGA MOTHER

Scientific name: Anhinga anhinga
Location: Indian River Lagoon
Photo: © 2005 Jeffrey Berger

Anhinga mothers will lay an average of 3 to 5 eggs per nest spaced a day or two apart. Since incubation begins with the first egg, hatchlings will vary in age and size resulting in brood reduction.

The Anhinga has earned various nicknames depending upon how you experience one. Veteran boaters call it the “snakebird.” It earns this nickname by swimming submerged with only its neck and head undulating above the waterline like a serpent. The lack of waterproof plumage enables it to travel effortlessly underwater in search of fish, but for every advantage there is also a hitch. When soaked to the skin, the Anhinga looses body heat and must find a nearby perch to warm itself after feeding. With spread wings and fan-shaped tail feathers drying in the sun, the Anhinga earns its other nickname, “water turkey.”

TREETOP DINING

Scientific Name: Anhinga anhinga
Location: Wakodahatchee Wetlands, Delray Beach
Photo: © 2007 Jeffrey Berger

As anhinga fledglings grow older, they reach into their parent's throat to retrieve solid food. Meanwhile, other siblings wait their turn.

Most birds lay their eggs, not all at once, but over a series of days. Since all eggs need the same time to incubate, hatchlings are born sequentially. Thus, the first egg hatches first, the last egg hatches last, and not all chicks start life as equal opportunity birds.

The first-born hatchling has no competition for food and grows rapidly. Chicks born later are consecutively smaller and weaker. Presumably, the first-born fledgling is the one feeding.