holly wrote:... I do have a sparrow problem and I know how you feel about this so let's just say I clean them out on a daily basis. Please do not write me off because of the sparrows. They only try to build in two of my 12 compartments and my PM pair have chosen theirs already. It is very hard to convince my 9 year old daughter that killing these birds is the 'right' thing to do, especially when I preach "compassion to all living things" to her on a daily basis. ...
It's possible to have HOSP and PMs living in the same house, but you'll never get a good colony going with the HOSP there.
Tearing out the HOSP nests might also cause the male HOSP to go on a rampage, the so-called Male HOSP Revenge Syndrome.
You don't have to kill the HOSP, though. I use the Trio Spare-O-Door trap on our Trio Grampa house, and whenever I capture a HOSP, I trim the five outermost primary feathers. I've heard others trim the tail feathers (never done this myself). Whichever method you choose, the temporary loss of these feathers makes the HOSP lose interest in nesting in the house and bothering the PMs.
Capturing and trimming the female is fine and good. But when you capture the male and trim his feathers...that's when you know you've nipped that problem in the bud. At least, until the next HOSP pair try to set up shop.
If lethal control measures turn you off, or isn't an option, I strongly suggest you consider non-lethal feather trimming. You'll protect your PM chicks, and not have to tell your daughter you had to kill something.