As an expert in purple martin houses, I can provide you with a detailed answer to the question of whether you have to clean out these houses. Cleaning out a purple martin house is indeed recommended after the birds leave in September.
Purple martins are migratory birds that typically breed in North America during the spring and summer months. They are known to return to the same nesting sites year after year. However, once the breeding season is over and the young martins have fledged, they will migrate south for the winter.
Cleaning out the martin house after the birds leave serves several purposes. Firstly, it helps maintain the overall hygiene of the house. Over time, the nest materials can accumulate and become soiled, which can lead to the spread of bacteria and parasites. Cleaning out the nest helps prevent the buildup of waste and potential health risks for future occupants.
Secondly, cleaning out the house can help deter unwanted birds from roosting or nesting in it during the off-season. House Sparrows, in particular, are known to compete with purple martins for nesting sites and can be aggressive towards them. By blocking the holes with plugs or other deterrents, you can prevent these birds from taking over the martin house.
To clean out a purple martin house, you should wait until the birds have left, which is usually in September. You can then remove the old nest materials and any debris that may have accumulated. It is important to wear gloves and take proper precautions while cleaning to avoid any potential exposure to parasites or bacteria.
After cleaning, it is recommended to block the holes with plugs or other deterrents to prevent birds from roosting or nesting in the martin house during the off-season. This will help ensure that the house remains available for purple martins when they return in the following spring.
Cleaning out a purple martin house after the birds leave is important for maintaining hygiene and preventing unwanted birds from taking over the nesting site. By following these recommendations, you can help create a suitable environment for purple martins to return to year after year.