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April 15, 2010--All Three Eggs Have Hatched!

by Bob Sallinger

kgw.com

Posted on April 15, 2010 at 1:48 PM

Updated yesterday at 1:49 PM

All three eggs have now hatched. The fact that all three hatched within a less than a day of one another means that the parents did not start incubating in earnest until the third egg was laid. Had they really start incubating on the first egg, the eggs would have most likely hatched a couple of days apart.  This is good news for the chick in the last egg laid----if it had hatched 4-5 days after the first egg, it would have been at something of a disadvantage since it would be significantly smaller than its siblings. Viewers from prior years probably recall the smallest nestling taking a bit of a beating when it competed for food.

The parents will continue brooding the young to keep them warm. They are not yet able to thermoregulate effectively on their own. At seven to ten days out you will start to see them out in the open more although a parent will always be close by. They will be fed fairly regularly---there was a dead pigeon in the nest today. Mom and dad will tear off small bits of meat to feed them--it will be a couple of weeks before they are really able to start tearing food on their own. These little guys will grow incredibly fast---they will go from eggs to flighted birds in about 42-45 days.

For those of you who have been inspired by Raptor Cam and want to learn more about what you can do to help birds that are nesting in your own backyards, check out Audubon "For the Birds" Brochure. It is full of great information. For those who want to go even further check out Audubon's Backyard Habitat Certification Program.

Finally for those who cannot get enough of birds of prey, Audubon will be releasing an adult bald eagle in Lake Oswego this Sunday at 1:00 pm at George Rogers Park. The eagle was injured in a fight with another eagle a couple of months back and has been recovering at our Wildlife Care Center. We will do a quick presentation on eagles and then set the bird free. All are welcome to attend. For more information check out our eagle release webpage.

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