Birds at the brightest locations sang about 50 minutes longer per day on average than birds at the darkest locations, according to a 2025 study. The difference included earlier morning singing and later evening singing. The finding links brighter surroundings with longer singing activity; it does not establish whether the change helps or harms birds.
What did the study find?
In “Light pollution prolongs avian activity,” published online in Science on August 21, 2025, Brent S. Pease and Neil A. Gilbert reported that birds in the brightest locations sang about 50 minutes longer per day on average than birds in the darkest locations. Science News reported the difference as 18 additional minutes in the morning and 32 additional minutes in the evening. These figures describe the brightest-versus-darkest comparison, not a measured change for every bird or species. Science News
How did researchers study birds’ singing?
According to Science News’ account of the study, the researchers used recordings submitted to BirdWeather, filtered the dataset to 4.4 million calls, and analyzed daily singing start and end times for 583 diurnal bird species in relation to local light-pollution levels. The result is a large-scale comparison of observed singing activity across locations; it is not, by itself, proof that artificial light caused a particular biological outcome. Science News
Did light pollution cause the birds to sing longer?
The study found an association between brighter locations and longer daily singing. It does not establish that light pollution alone caused the difference, nor does it demonstrate a specific mechanism. One proposed explanation is that artificial light in the early morning may cue birds to begin singing sooner, but that remains a possible explanation rather than a proven account of why the pattern occurs. The association was reported as stronger for species with larger eyes and during breeding season. Science News
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#1 Best Overall
- Chew-Proof Metal Build: The top and base of this bird feeder are made of metal. Advanced metal processing techniques make it more sturdy for outdoor use and resistant to squirrel damage.
- 2 Steps Disassemble Easy Clean Thoroughly: No tools needed! Disassemble in just 30 seconds. Easy to maintain and refill weekly. Say goodbye to the hassle of cleaning and reassembling bird feeders.
- One-Handed Refilling Made Simple: Press the roof button and slide up to lock it in place on the steel cable. No need to remove the entire feeder, making refills quick and easy.
- High Guardrail Seed Tray Design: Prevents seeds from falling while birds feed, reducing waste.
- No Assembly Required – Just Unbox and Use: 360-degree perch design allows multiple birds to feed simultaneously without being limited to fixed feeding holes, providing a more comfortable and free feeding experience for your birds.This is an excellent gift choice, adding vibrant colors to your yard and enriching garden life. It brings more joy to families and children.
Is longer singing harmful or beneficial to birds?
That is not yet known. The reporting identifies unanswered questions including whether birds lose sleep, compensate by sleeping during the day, or use the additional activity to forage and feed young. The consequences for survival and reproduction have not been established, so longer singing should not be described as inherently harmful or beneficial. Science News Science Media Centre Spain
How widely does the finding apply?
University of Auckland Associate Professor Kristal Cain noted that most of the bird-song data came from North America and Europe, and that comparable work is needed in other regions. The results therefore should not be assumed to describe birds everywhere equally. Science Media Centre Spain
Rank #2
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What can people do about outdoor light?
The expert recommendations reported by Science Media Centre Spain include using lights only when needed and no brighter than necessary, closing curtains at night, and encouraging communities to shield streetlights and choose warmer-colour lighting. These are practical suggestions for reducing unnecessary light at night; the study did not test whether any of these measures change birds’ singing. Science Media Centre Spain
Quick Recap
Best Value
- 【JEALOEUR BIRD FEEDER】Jealoeur retractable bird feeders, can be expanded to store a large amount of food. It has a unique Latch Feature, which makes it easy to open and close the top for filling and cleaning.
- 【SCENES TO BE USED】Press PUSH to open the lid, put the wild bird seeds, sunflower seeds for birds , safflower bird seed etc, into the bird feeder, close the lid, and then hang the bird feeder under the eaves or in the garden.
- 【LARGE CAPACITY】It is made of durable, high quality plastic. Holds up to 2.2 Lb of seeds. Size: 8.7 x 7.6 x 7.8 inches.
- 【HUMANIZED DESIGN】Comes fully assembled and ready to hang. With its Hexagonal roof, the bird feeder features an inclined roof to shade birds from the sun and rain. When the seeds are eaten, more seeds will naturally fill the tray.
- 【EASY TO USE】 For your convenience and the health of garden birds, please use the Jealoeur wild bird feeder that is easy to fill, empty, and clean.
Rank #4
- BUILT FOR SMALL SONGBIRDS — AND IT KEEPS THE BIG ONES OUT: Six small ports with 1.4" perches are sized for finches, chickadees, sparrows and nuthatches. Larger birds like blue jays, grackles and cardinals can't get a grip, so they stop raiding the tube and flinging the small seed on the ground to get at the big kernels. If you want cardinals or woodpeckers too, pair this with a platform or hopper feeder — this one is deliberately the small-bird station.
- WIDE LIFT-TOP + SEE-THROUGH TUBE — REFILL IN SECONDS: Lift the metal lid straight up and pour; the opening is wide enough that you are not funnelling seed through a narrow neck. The clear tube shows the level from across the yard, so you refill before it runs empty instead of checking by opening it. Holds 1.5lb of sunflower, safflower or mixed seed — a small tube on purpose: seed gets eaten before it can sit and go stale.
- HOW TO CLEAN IT: The lid lifts off and the tube is clear, so you can see exactly what needs cleaning. The base is fixed — not removable — so here is what works: tip the feeder upside down and tap to empty packed seed, run a bottle brush or pipe cleaner in through the ports, rinse, then stand it upside down until fully dry before refilling. Do this every 2-3 refills and after any spell of wet weather, so damp seed never sits at the bottom.
- METAL LID, BASE AND PORTS: The lid, base, perches and all six port surrounds are metal, so beaks and claws land on metal rather than thin plastic; the seed tube itself is clear polycarbonate, which is what lets you see the level. Note: this is not a squirrel-proof feeder — the ports are open and a determined squirrel can reach seed. If squirrels are a problem in your yard, hang it from a pole with a baffle, which is what owners who have no squirrel trouble do.
- HANG IT WHERE YOU CAN WATCH — POLE, BRANCH OR SHEPHERD'S HOOK (POLE NOT INCLUDED): The metal hanger fits a standard shepherd's hook, deck pole or tree branch. Most owners hang it within sight of a kitchen or living-room window — finches find a new feeder within days, and you get the show from inside. Works all four seasons, with the busiest months being late autumn and winter when wild food runs short. A ready gift for a parent, grandparent or anyone who watches birds.
Rank #3
- FUN-TO-INSTALL: This bird feeder features a traditional oriental architectural style with a retro pagoda design. It offers a feeding spot for sparrows and provides you and your family with a delightful 1-minute assembly experience. Get ready to enjoy a fun and simple installation process
- HOW FEEDING BIRDS: The 8.2 x 8.2 x 9.8 inch feeder can hold up to 5 pounds(2 Pcs) of seeds, typically lasting 1-3 days. Sunflower and Niger seeds are more likely to attract Cardinals, Goldfinches and Chickadees
- GARDEN GIFT IDEA: Bird feeders are a unique gift idea. Create an opportunity for family, children, grandparents and even pets to see nature’s colorful wild birds up close, bring the birds and best wishes to them
- EASY BIRD FEEDING: The transparent panel allows for effortless monitoring of the remaining bird seeds, while the wide opening makes refilling straightforward
- WARM TIPS: To ensure that the bird feeder is secure, follow the user manual steps for installation
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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