Has a built-in ant moat. It doesn't leak.. No awkward spills when filling the wide mouth container. You don't need special size brushes to get out the insidious pink/grey/black fungus (that will kill/sicken Hummingbirds). No frustratingly slow pouring out of rinse water from a narrow neck bottle (e.g. most other feeders) to get it really clean. This is by far the BEST DESIGN Hummingbird feeder I have used. I had the 48 oz Perky Pet feeders. I needed more feeders because of a big increase in the Hummingbirds in my garden. The newly purchased 48 oz Perky Pet feeders lasted only a couple months before leaking problems began. Then the older Perky Pet feeders also began leaking (after a particularly hot summer). I also had several 16 oz Perky Pet glass bottle feeders (they took forever to clean, rinse out thoroughly and then fill). I tried several other feeders from different manufacturers including some fancy ones with art/stain or crackled glass bottles. I threw those out when the feeding ports started turning a funny color (toxic?).. Those craftsy artsy feeders were also time-consuming to clean and fill. I tossed all the other models of Hummingbird feeders out (about two dozen of them) after I bought a rectangular 32 oz FIRST NATURE Feeder (before I saw the round model). The rectangular model didn't have an ant moat and fell out of its top hanger piece (which I glued back on with gobs and gobs of glue. Now I have a dozen of the round 32 Oz First Nature feeders. I take off the yellow flower shaped feeder port covers because they collect gunk underneath (yellow attracts hornets/wasps/bees); Hummingbirds are attracted by red...so I toss the yellow bits on this feeder because they appeal mostly to human and wasp/hornet/bee vision. The Hummingbirds flock to the color red. When I go out to take in the empties, the birds hover around my head and follow me to my door. And they're waiting when I emerge with a full feeder and follow me to the big shrub where I hang the feeders. What a show! NOTE: HOW TO THOROUGHLY CLEAN THIS FEEDER IN RECORD TIME. I looked for a long time for a bottle brush that was designed with bristles on the tip as well as the sides. The only bottle brush that met my requirements was the SUPERIOR BABY BOTTLE BRUSH (also available on Amazon.com).This is the perfect brush (I bought three) that will clean the entire insides of the hummingbird feeder without your having to struggle with another type brush to clean the hard to reach places. SYRUP MIX RECIPE: 1 cup white, refined cane sugar + 2 cups boiled plain water. Do not use organic sugar....it contains metals/minerals that are toxic to the birds. Read the research. Flower nectars ratio of sugar to liquid ranges from ratios of 1 sugar to 1 liquid all the way to 1 sugar to 4 liquid, depending on the plant species and the weather and the soil. What researchers have found is that the Hummingbirds prefer the more concentrated mix...1:1 or 1:2. The birds get enough calories at one feeding with the more concentrated mix. This allows the birds to spend more time foraging for their other foods (insects). There is absolutely nothing in the scientific articles that says the birds find it hard to digest a more concentrated syrup mix. Also, NEVER give your birds READY MIXED RED DYED SYRUP. It's expensive, and the dye makes them sick (it's food grade for humans....hummingbirds are not humans and are a lot more sensitive). Another reason I'm sticking with my 1 cup sugar to 2 cups water mix. Last year, the baby hummingbirds looks a lot fatter and bigger than the year before. I think it's because the parent birds didn't have to expend so much energy getting enough calories to get insect foods and tend to the nestlings. Fatter bigger nestlings = healthier, stronger birds that can withstand the rigors of an increasingly difficult migratory route.