[wisb] Nest predation domino effect
- From: Mary Strasser <mrstrass@xxxxxxx>
- To: Wisconsin Bird Network <wisbirdn@xxxxxxxxxxxxx>
- Date: Sat, 30 May 2009 09:40:28 -0500
A nest failure "domino effect" was set in motion on our property earlier this week when a raccoon raided a wren nest in a birdhouse mounted to a tree a few yards into our woods. The male wren attached to that nestbox started looking elsewhere for housing, and he decided that the bluebird house in our small backyard prairie fit the bill. Unfortunately, that birdhouse was occupied by a female bluebird sitting on a second clutch of eggs. The hen bluebird and her mate stayed pretty close to their nestbox until we had an all-day rain on Wed. that forced them to leave the immediate area to find food. That day off the nest gave the male wren an opportunity to remove the bluebird eggs. On Thursday morning the male wren was singing on the roof of the bluebird house and the bluebirds were nowhere in sight. I opened the birdhouse yesterday, after seeing 2 wrens going into it. There were a few twigs placed atop the empty bluebird nest and I found blue eggshells on the ground below. The wren couple is now actively building a nest inside the birdhouse. Although I still see the bluebird pair around our yard, they have relinquished ownership of the birdhouse to the wrens. Those who read my previous posts are aware that my bluebird couple had previously fledged a brood of 5 from their exceptionally early spring nest, despite the fact that there was a territorial male house sparrow in my yard that had presented a threat to their safety. While I am disappointed that the bluebirds were unsuccessful in fledging a second brood, I am happy to see that their 5 offspring from their earlier nest are doing well finding food for themselves. I see the young bluebirds foraging in our yard, sometimes visiting the feeder dish that I stock with suet bits and mealworms. Life for a songbird is challenging. It really is a jungle out there! Mary Strasser in Onalaska La Crosse County _________________________________________________________________ Windows Live?: Keep your life in sync. http://windowslive.com/explore?ocid=TXT_TAGLM_BR_life_in_synch_052009 #################### You received this email because you are subscribed to the Wisconsin Birding Network (Wisbirdn). To UNSUBSCRIBE or SUBSCRIBE, use the Wisbirdn web interface at: http://www.freelists.org/list/wisbirdn. To set DIGEST or VACATION modes, use the Wisbirdn web interface at: http://www.freelists.org/list/wisbirdn. Visit Wisbirdn ARCHIVES at: http://www.freelists.org/archives/wisbirdn.
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- » [wisb] Nest predation domino effect - Mary Strasser