Mama II worked hard building her second nest. She had it pretty much completed in only two days. She brought in huge mouthfuls of nesting material. After struggling a little with her first nest, I guess she has this nest building thing down now.
Click photos to enlarge.
Mama spent some time in the box after breakfast this morning and I suspected she was laying an egg. Daddy II occasionally took her a few mealworms. Maybe appropriate that today is Mothers Day. With a nest built and an egg in the box, we are well on our way to a second brood of bluebirds.
I’ve seen two of the fledged juveniles with the parents. No idea if that is all that have survived or the others have just not come into the yard. Mortality is high in most species that produce a lot of babies. That is precisely why bluebirds attempt so many nestings. It is a stategy developed over time to keep the species going.
Daddy and one of the first brood.
Bluebird populations declined by an estimated 90% from 1920-1970 due to loss of habitat, competition for nesting cavities from introduced species like House Sparrows and starlings and use of pesticides. Due to conservation, mainly nestboxes, Eastern Bluebird numbers have increased dramatically, but Western Bluebird populations have not. All bluebirds still need help. I urge folks with an interest in them to put up a nestbox or a trail of them. Just do your homework first so you’re not erecting death traps instead of places to raise future generations of bluebirds. To find the answer to about any bluebird question, visit http://www.sialis.org/index.html
Visit my flickr stream to see more nature pics http://www.flickr.com/photos/reddirtpics/
Second Brood 2013 Summary:
- First sign of nest building 05 May
- Nest completed 10 May
- First egg 12 May