A stagnant birdbath is an appealing place for mosquitos to lay eggs, but one with circulating water is not. Mosquitoes cannot deposit eggs when there is movement in the water. An agitator "agitates" the water, keeping it moving. The birds will not mind, but the bugs will.
Mosquitoes require stagnant water to deposit their eggs and reproduce. Mosquitoes may reproduce in streams and rivers as well, although they frequently struggle to find sites where the water would not wash their eggs downstream.
Generally speaking, mosquitoes prefer still waters because it is in these areas that there is less movement and thus less risk of damage to their eggs. Rivers tend to be more turbulent and therefore are less attractive habitats for mosquitoes. However, some species do use rivers as part of their distribution pattern so this question cannot be answered simply by looking at their genus or family. For example, there are freshwater mosquitoes (genus *Culex*) that only live in rivers.
Some researchers have suggested that there might be a relationship between the number of mosquito species found in an area and the type of habitat present. If this is true, then we should expect to find more species in areas with many small bodies of water because this would be a more diverse habitat than those with few large bodies of water. However, other factors can also influence the diversity of insect communities such as vegetation type, soil composition, and climate.
In conclusion, mosquitoes need stagnant water to lay their eggs and reproduce. They prefer still waters because this reduces the chance of damage to their offspring.
Mosquitoes prefer to deposit their eggs in areas where there is lots of food for their larvae, although they will lay their eggs in nearly any stagnant body of water. If you have a fountain or other form of water feature surrounding your home, this might be a mosquito breeding ground. The larvae need sunlight and warm temperatures to develop into adults, so if these conditions are not present, they will not mature.
If you find small white bumps around the edge of the water body, these are probably algal spores that were blown in from another location and ended up in the water. Algae does not harm any animals and while it may look ugly, it provides nutrients for other organisms to live off of. It also produces oxygen as it breaks down.
If you are seeing signs of disease when you touch these larvae they should be treated by a veterinarian. However, if they are blackish-blue in color with tiny red eyes, then they are infected with a bacteria called Vibrio vulnificus. This bacteria can be found in coastal waters and estuaries and can be passed on through contact with sea water or eating contaminated seafood. Eating or drinking anything else contained in the water system is not recommended because of this risk.
If you are swimming in these waters or otherwise exposed to them, take precautions to prevent being bitten by mosquitoes.
Utilize water aeration and movement. This will keep the water's surface moving, driving mosquitos away. Furthermore, if there are any existing eggs or larvae in the water, it can aid in their death. It's the same reason mosquitos avoid laying their eggs in flowing water in the first place.
The more often you water your yard, the less likely you are to find mosquitoes around your home. Of course, finding out when your lawn needs watering is a different story. If you don't water your grass for several weeks, it will be time to get some sprinklers or hoses out and give it some needed moisture.
Mosquitoes need three things to survive: food, water, and shelter. If you take away any one of these necessities, they won't be able to thrive. That's why it's important to make sure that you are not providing any opportunities for mosquitoes to bite you or your loved ones. For example, if you know you will be sitting outside during dusk-till-dawn this summer, consider using insect repellent. This will help prevent you from becoming another source of food for these pests.
Water is also necessary for mosquitoes to breed. So if you remove all available sources of standing water in and around your home, you will be helping to reduce the number of insects that can spread disease.
Last but not least, mosquitoes need shelter.
Mosquitoes will be drawn to your home by the undisturbed, fresh water. The same is true for bird baths, which supply mosquitoes with a source of shallow, stagnant water in which to lay their eggs. Adding flowers to your yard can attract other insects that eat mosquitoes, such as dragonflies and parasitic wasps.
Watering the lawn early in the morning before it gets too hot outside helps prevent mosquitoes from laying their eggs near the surface of the soil. The moist ground provides an environment they can crawl into at night to die.
During rainy seasons, when there are many pools to choose from, young children are at risk of drowning in unsupervised play. Parents should take caution not to leave children alone in any body of water, even if the pool is small and contained. Even a child-safe pool cannot protect them from all types of water-related accidents.
The best defense against mosquitoes is to avoid being bitten in the first place. These methods have been proven to reduce or eliminate mosquito bites:
Use EPA-approved insect repellent when outdoors. Repellents work by either burning off airborne molecules that trigger irritation signals in mosquito skin or by emitting chemicals that confuse or repel the insect.
Choose outdoor activities during the evening hours when mosquitoes are less active.