Change Hummingbird and Oriole Nectar More Often in Hot Weather!
If you put out nectar feeders for hummingbirds and orioles you probably change the nectar (sugar water) about every 3 to 4 days, and that is generally what we recommend – unless the temperature gets very hot. If the temperature is in the low to mid 80s, changing the nectar every 2 to 3 days will help ensure that it remains fresh, but should the mercury rise into the upper 80s and 90s (like it has done this week), it’s best to clean the feeder and change the sugar water every day to every other day.
In hot weather, or if your feeder is placed in direct sunlight all day, harmful bacteria can quickly grow in the nectar and it can even ferment. Neither is healthy for hummingbirds or orioles and can make them very sick. If you notice the sugar water looking at all cloudy, that’s another sign that it needs to be replaced.
Feeders should be thoroughly cleaned before replacing the nectar. A mild soap, like Dawn dish detergent, and hot water are all you’ll need to clean your feeder. Be sure to rinse well in hot water after cleaning. In hot temperatures, you may also notice black mold growing in the feeder ports. This can be quickly removed with a nectar brush.
When making nectar, be sure to mix up a little extra – it can be stored safely in the refrigerator for up to 2 weeks.