How Do Robins Grow from Egg to Flight? Part 3

Carolyn’s Online Magazine (#COMe)

HOW DO ROBINS GROW FROM EGG TO FLIGHT?

Part 3: Quiz #2

On May 1st I noticed a nest, tucked behind a light on our patio, in which were four gorgeous blue eggs. We were about to take an unplanned journey with Mom Robin, who was incubating her eggs.

May 18

May 18

This is the third of four posts—an introduction (How Do Robins Grow From Egg to Flight?: Part 1) and three 10-question quizzes (each with a bonus question) on robins, illustrated with photographs I shot daily to record the chick’s progress and the care they received from Mom Robin and Dad Robin. (How Do Robins Grow From Egg to Flight?: Part 2 )

May 19. Parent robin feeds robin chicks.

May 19. Parent robin feeds robin chicks.

May 19. Robin chicks want more food after Parent robin leaves.

May 19. Robin chicks want more food after Parent robin leaves.

Below is the second quiz.

 QUESTIONS

May 19. Robin chicks begin to settle down after Parent Robin leaves to gather more food.

May 19. Robin chicks begin to settle down after Parent Robin leaves to gather more food.

11. What happens if you move a robin’s nest?

12. How long does it take for robin eggs to hatch?

13. How much do newly-hatched robins weigh?

14. Describe newly-hatched robin chicks.

15. How do robin chicks recognize their parents?

16. How often do robin chicks eat?

17. How do robin chicks keep their nest clean?

18. Robins are altricial birds, meaning what?

19. What are the main predators of robin eggs?

20.  If one parent is killed while the robin eggs are incubating the eggs are incubating, will the other parent take over the nest?

Bonus question   What three things does a baby robin know as soon as it hatches?

To learn the answers click on more:

QUIZ ANSWERS

11. As Mom Robin builds her nest she memorizes all the features around it. Moving the nest makes the environment of the nest different. When those features are gone because the nest is moved, she may simply not even recognize her nest anymore.#

12. Robin eggs hatch 12-14 days from the time the last egg is laid.** Mom Robin broods on the nest in order to keep the babies warm.^^^

13. Newly-hatched robin chicks weigh 5.5 grams–a little less than a quarter.**

14. Baby robins are colorful—their skin in bright light may appear yellowish, and is transparent enough to see their green gall bladder, purplish-red liver, and orange yolk sac right. The inside of their mouths is bright yellow and orange-red. **

15. When robin chicks first hatch they probably don’t recognize their parents. However, they know when the parents arrive with food by the “bounce” they feel on the nest, which is their signal to pop up with their mouths open. Gradually they start learning the sounds their parents make. By the time their eyes open they recognize their parents’ voices.**

Little Dog (the cat) desperately wants at the robin chicks

Little Dog (the cat) desperately wants at the robin chicks

16. Both Mom Robin and Dad Robin spend literally every waking hour gathering  food for them. The parents return to the nest every few minutes all day long, from sunrise to sunset.#

17. Robin chicks produce their poop in fecal sacs, encased in strong membranes that don’t leak.** (My observation: these sacs are white. After the chicks expel them either Mom Robin or Dad Robin discard them from the nest.)

Robin chick ejects a white waste sac onto the side of the nest...

Robin chick ejects a white waste sac onto the side of the nest…

...where the Parent Robin picks it up and removes it from the nest.

…where the Parent Robin picks it up and removes it from the nest.

18. Altricial means that robin chicks are hatched in an immature state and depend on care from their parents to survive.^^

19.  The main predators of robin eggs are snakes, squirrels, blue jays, and crows. Snakes swallow eggs on the spot. Squirrels usually stay up in branches, and seldom drop their eggs Jays and crows are both egg and nestling eaters.#

20. If Mom Robin is killed the eggs are doomed because Dad Robin lacks a brood patch, so he doesn’t know how to brood eggs. If Dad Robin dies Mom Robin might continue to incubate, but may just give the nest because her chances of being able to feed more than one or two nestlings is very slight.#

BONUS QUESTION ANSWER:

The nestling knows

  • to sit very still when its parents are away
  • to pop up and open its mouth to beg for food the moment its parents return
  • and to poop as soon as it swallows some food.**

~~~~~~~~~~~

SOURCES

**   http://www.learner.org/jnorth/search/RobinNotes2.html

^^   http://www.ask.com/pets-animals/baby-robins-after-leave-nest-85898ac7e50507af

^^^   http://www.ask.com/pets-animals/baby-robins-leave-nest-6d37f0fb9259609f?qo=questionPageSimilarContent

#   http://www.learner.org/jnorth/tm/robin/FAQNestsEggs.html

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About carolyncholland

In several if my nine lives I have been a medical lab technician and a human service worker specializing in child day care, adoptions and family abuse. Currently I am a photo/journalist/writer working on a novel and a short story. My general writings can be viewed at www.carolyncholland.wordpress.com. My novel site is www.intertwinedlove.wordpress.com.
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2 Responses to How Do Robins Grow from Egg to Flight? Part 3

  1. Grace ( & Fred) Wells says:

    This article is for the birds & bird lovers too !

    Like

  2. Pingback: How Do Robins Grow from Egg to Flight: Part 4 | Carolyn's Online Magazine

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