Well, this is a hard story to tell, folks. Our reader friend, Nancy, wrote that the Eastern Bluebirds in her yard had laid a second set of eggs.
They hatched, but twelve days later the parent birds were forced to abandon the nestlings.
Note: Nancy began documenting this local bluebird nesting and shared it with The Squirrel Nutwork in April. Search ‘bluebird’ if you wish to see the older posts!
First, we are pleased to say the fledglings from the first nesting had continued to stay with the parent bluebirds, and were helping to feed the second set of hatchlings.
Nancy reported it was wonderful to see all three return.
Then one evening a raccoon tried to get into the nest box…
…including climbing the nearby fence. Lucky for the bluebirds, he got stuck and gave up.
But the next day, a House Sparrow was spotted entering the nest box. You readers may remember that the House Sparrow entered the nest box after the first set of fledglings left.
These aggressive–and non-native!–birds must have been harassing the bluebirds all along. Despite the help from another male bluebird and the three juveniles, the female was looking thin and worn out the day the raccoon appeared.
All of the bluebirds disappeared, leaving the 12 day old nestlings.
Nancy and her family tried to feed them.
Mealworms, egg whites and soaked dog food were recommended by the Wildlife Rescue League–but with work, these humans couldn’t feed the same amount of food that six birds could, and the nestlings didn’t make it. Nancy and her family were quite upset when they wrote us.
As soon as the nest box was empty, a House Wren tried to use it, and in fact, was rather insistent!
The solution has been to leave it open to discourage the other birds.
Unfortunately, this nature story isn’t unusual. Even with this much help from humans, wildlife have a tough time of it. The competition for food and nesting sites is fierce. The more docile songbirds like the Eastern Bluebirds can’t compete with critters who are more aggressive.
Nancy wrote us that even with the loss of the second hatchlings, the positive part of having the nest box in their yard was the success of the parent birds raising the first three chicks through to being able to fend for themselves. They will go on to raise families of their own next year.