Check the label information to make sure the weight activation mechanism can be fine tuned to exclude grackles and not just squirrels.
Bird nest in my siding with grackles.
Rarely common grackles nest in unusual places such as birdhouses woodpecker holes cliff crevices barns and still occupied nests of osprey and great blue herons.
It will close when a heavy bird like a grackle lands on it.
The nest is made of grass twigs reeds and mud.
The female will lay 4 to 7 eggs that are pale greenish brown with dark marks.
The nest can take as little as a week to as long as six weeks to finish.
My wife said she saw the second hole about a year ago and thought it was a dirt spot on the siding.
Common grackles often nest in small colonies and several males may perch in adjacent treetops to sing their creaking grating songs.
Upon inspection of other areas i found another hole similar to the first one.
Throughout the east and midwest this big blackbird is a very familiar species on suburban lawns striding about with deliberate steps as it searches for insects.
Doesn t seem to be making a nest.
If they build near your home that might mean materials you d rather they didn t use.
I can t see if there are any bugs or any other reason that would attract this bird to my home.
For instance birds build their nests out of any nearby material they can get their beaks on.
You can find the nest located in a shrub or tree 3 to 30 feet above the ground or water.
The inside is lined with finer materials.
This coupled with the fact that they are not at all picky as to.
A single female can lay four to seven eggs in a single mating season.
Common grackles build bulky nests in conifer trees dense spruce or other similar small trees.
The common grackle is a scrappy bird if there ever were one.
Birds have been known to damage insulation shingles siding and other housing materials to grab nesting materials.
They let small birds enter but not the larger grackles.
Another good choice is a feeder with an adjustable weight activated perch.