Char-Broiled Nest

Debbie Robbins

Moosup, United States

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119 Views, June 2, 2011


May 15, 2011

I was walking by one of our old barns when I saw a Robin fly out of an old grill that we no longer use.

(Can’t take it to the dump tho, because we might need a part off it some year!!!! but that’s another story! lol)

At first I didn’t think much about it… but then it hit me… look inside!

I gently lifted the Cover of the Grill and, low and behold there it was.

What a HUGE and Beautiful Nest!

Mama Robin started darting around and yelling so I left for a while.

I took my camera back later and captured this. :))

Sterling, CT USA

Canon SX210 IS

From the Internet:

Before she can lay her eggs, the female robin, with help from her mate, builds a nest from twigs, mud and dried grass. A finished nest is circular and deep enough to safely cradle the eggs and, later, the nestlings. Nest-building takes the robins two to six days. A pair of robins will often nest two or three times in a season.

Laying the Eggs

A clutch of robin eggs will hatch in 12 to 16 days. The female robin lays one small blue egg each day to a total of three to five eggs. She feeds on earthworms in the morning in order to ensure that her body has the energy to handle the physical demands of laying an egg. Until all eggs are laid, she may limit the time she spends sitting on the nest. This is to keep the older eggs cool so that the entire clutch develops at roughly the same time. Until the eggs start to hatch in approximately two weeks, the mother rarely leaves the nest for more than five or 10 minutes at a time.

Incubation

A mother robin is beautifully camouflaged as she sits on her eggs. The mother robin must keep the eggs at a healthy temperature to ensure that the embryos develop normally. A robin’s body temperature is approximately 104 degrees and is kept steady by the insulating property of feathers. For the eggs to receive body heat more directly, the mother robin develops a brood patch. This is an area on her belly where the feathers have fallen out, exposing the naked skin. In cool weather, the mother presses the brood patch against the eggs to warm them with her body heat. In hot weather, the female will keep the brood patch covered by the long, outer feathers, lessening the degree of warmth the eggs receive. She may even shade the eggs with her wings to keep them cool.

During the incubation period, the female regularly moves the eggs around the nest. To do this, she stands on the rim and turns the eggs with her bill. Rotating the eggs helps to maintain an even temperature and keeps the embryos from becoming to stuck to the eggshell.

Hatching

A newly hatched baby robin begs for food next to its unhatched siblings. After 12 to 16 days, the eggs are ready to hatch, usually one each day in the order they were laid. Like most birds, the chicks use an egg tooth—-a sharp hook at the end of the beak—-to poke a hole in the shell. The process of hatching can take an entire day, as the chick must rest periodically from the exhausting struggle to free itself of the shell. Newly hatched robins are naked and blind, weighing less than a quarter.

Leaving the Nest

Hungry robin nestlings vie to be fed. The nestlings are fed up to 40 times a day by both parents. At approximately 13 days old, they are ready to leave the nest. More than half of all robins do not survive their first year, destroyed by predators that include the domestic cat. Those birds that do survive will be ready to raise their own young in spring and are likely to live another five to six years.

Artwork Comments

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