There are a few options when it comes to bird baths that can refill themselves. Self-filling bird baths provide a constant source of water for birds without requiring frequent manual refilling. This can be especially useful for people who want to help birds have access to water but may not always be around to top up a regular bird bath. Some common types of self-filling bird baths include solar-powered bird baths, self-priming bird baths, and gravity-fed bird baths connected to a larger water reservoir. In this article, we’ll take a closer look at how each of these types of self-filling bird baths work and some of the key factors to consider when choosing one.
Solar-Powered Bird Baths
Solar-powered bird baths are designed to collect energy from the sun during the daytime and use it to pump water into the bird bath basin from a ground reservoir. This provides a continuous flow of clean, fresh water for visiting birds. The solar panel converts sunlight into electricity that powers a small pump that moves water from the reservoir up into the bird bath. Many solar bird baths use a float mechanism to automatically shut off the pump and stop refilling when the water reaches a preset level in the basin. This prevents overflow or wasting water.
Some key advantages of solar-powered self-filling bird baths include:
- Provide a constant water source without electricity or batteries
- Automatically refill using power from the sun
- Allow placement anywhere that gets sufficient sunlight
- Require minimal maintenance beyond occasional cleaning
When shopping for a solar bird bath, look for ones with good solar panel efficiency and power output. The pump needs to be strong enough to lift water from the ground reservoir up into the basin, which may be 2-3 feet in height or more. It’s also important to make sure the solar panel gets sun exposure throughout the day. Partial shade can limit its charging ability. Most solar bird baths should be emptied and cleaned periodically like any other bird bath.
Example Solar Bird Bath Product
| Product Name | Farm Innovators Model SB-1 Solar Birdbath |
|---|---|
| Description | Bronze finished steel basin with built-in solar panel. Lifts water 1-1.5 feet from ground reservoir. |
| Capacity | 1.5 gallon basin |
| Solar Panel Power | 2 watt |
| Price | $149.99 |
Self-Priming Bird Baths
Self-priming bird baths utilize a siphon mechanism to automatically refill the basin when the water level drops. The key components are an elevated basin connected by a tube to a ground reservoir. As birds drink and the water level decreases, air enters the siphon tube which starts water flowing from the reservoir up into the basin. Once full, the water flow stops.
The main advantages of self-priming birdbaths are:
- No power or electricity required
- Relatively simple mechanical operation
- Refill basin automatically using gravity and siphon action
- Can be installed in any outdoor location
The elevation difference between the basin and reservoir provides the gravity pressure to push water upwards without a pump. Some considerations for self-priming bird baths are ensuring the reservoir remains full and the siphon system is properly primed. The refill rate can be slower than pumped systems. Proper placement is also important so birds can comfortably access the basin.
Example Self-Priming Bird Bath Product
| Product Name | Perky-Pet PP100 Auto-Filler Birdbath |
|---|---|
| Description | Blue speckled basin with underground reservoir and siphoning tube. |
| Basin Capacity | 2 quarts |
| Reservoir Capacity | 1 gallon |
| Height | 17 inches |
| Price | $129.99 |
Gravity-Fed Bird Baths
Gravity-fed bird baths work by connecting the basin to a large water reservoir located at a higher elevation. Gravity causes water to flow downhill from the reservoir into the basin. When the water level drops as birds drink, more flows in to replenish it. A float valve shuts off the water once the basin reaches the desired level.
Some of the key features of gravity-fed self-filling bird baths include:
- Refills automatically using gravity, no power required
- Water in reservoir provides consistent pressure
- Float valve controls water level in basin
- Can support larger capacity bird baths
- Needs proper elevation for water to flow down into basin
The reservoir must be high enough above the basin to generate adequate water pressure. Typical installations have 10-15 feet of elevation difference. The tubing running from the reservoir should be 3/4″ or larger diameter to reduce flow restriction. Gravity-fed bird baths are relatively easy to DIY using basic plumbing supplies. Keeping the reservoir filled is important for continuous operation.
Example Gravity-Fed Bird Bath Product
| Product Name | Songbird Essentials Gravity Fed Birdbath Kit |
|---|---|
| Description | Poly resin bird bath bowl and adjustable float valve system. |
| Bowl Capacity | 2.5 gallons |
| Tubing Size | 1/2″ ID tubing (20 ft included) |
| Price | $59.99 |
Conclusion
In summary, there are several good options when it comes to bird baths that can automatically refill themselves. Solar, self-priming siphon, and gravity-fed designs allow bird baths to stay topped up without constant manual refilling. Factors like the capacity needed, weather conditions, and installation requirements can help determine which self-filling mechanism is best for your situation. Properly installed and maintained, these self-filling bird baths can provide a reliable water source for backyard birds all season long. Providing a dependable water station can aid birds health, especially during dry, hot weather.
