Last updated on September 8th, 2022 at 12:05 am
Two distinct habits of most birds in California are the dawn chorus and chirping during twilight. But many residents throughout the state are familiar with birds chirping at night, with some literally singing.
Crepuscular and diurnal birds chirp at night in California if there’s artificial light around. Nocturnal birds chirp as they are active at night, while songbirds sing to impress potential mates and mark territory. Flocking, migratory, and threatened birds also chirp at night.
6 Reasons Why Birds Chirp at Night in California
The intensity of many birds chirping collectively at night around your house may sometimes be unbearable.
Songbirds can sing for hours at a stretch, possibly ruining your sleep. Irrespective of the reason, you might need a pair of Loop Quiet Ear Plugs (available on Amazon.com).
These reusable noise canceling ear plugs made of soft silicone can reduce as much as -27 dB of surrounding noise.
This includes the apparently unending song of the northern mockingbird.
Also, the Loop box has a convenient carry case and 8 ear tips in 4 sizes:
- Extra small
- Small
- Medium
- Large
1. Crepuscular and Diurnal Birds May Chirp at Night Due to Artificial Light
Most birds are diurnal, so they sleep at night. Some species are crepuscular and are intensely active in the twilight hours.
Whether it be dawn or dusk, both crepuscular and diurnal birds may chirp at night in California due to artificial light.
The golden state has some of the brightest areas in the country, especially the California Bay Area and Southern California.
While Los Angeles is not as bright as the Las Vegas Strip or Shanghai from space, it is certainly among the brightest cities in the world.
Artificial light sources, including those for security, can fool many birds into thinking it is daytime.
For example, the American robin is tricked by artificial light.
These diurnal birds can’t see well at night, but artificial lights make them think they should be able to observe everything.
As a result, American Robins get scared and chirp at night, and if there’s a flock nearby, the noise can be quite loud.
Crepuscular birds may think it is dawn or dusk due to the artificial light, and they must feed.
The common nighthawk is a crepuscular bird, despite its name.
The species breeds in most parts of California, so they may start chirping at night due to artificial light as they mistakenly prepare to hunt and feed.
2. Nocturnal Birds Make All Kinds of Noises at Night in California
Unlike crepuscular and diurnal birds, any nocturnal species is supposed to chirp at night.
The black-crowned night heron in California is known to make a characteristic “wok” sound all night long.
But their nighttime activity may not bother you if you aren’t near their habitats, such as:
- Coast
- Marshes
- Swamps
- Wetlands
Unlike the black-crowned night heron that usually makes only one croaking noise, the different nocturnal owls species living throughout California vocalize with a range of sounds, including:
- Bark
- Chirp
- Chuckle
- Growl
- Hoot
- Rattle
- Scream
- Screech
- Shriek
- Whistle
California is home to at least 10 different owls, including the following:
- Barred owl
- Burrowing owl
- California spotted owl
- Flammulated owl
- Great gray owl
- Great-horned owl
- Long-eared owl
- Northern saw-whet owl
- Short-eared owl
- Western screech-owl
California is also home to the common poorwill of the nightjar family, which is a nocturnal species, so it calls and whistles at night.
But the yellow-breasted chat is an interesting case because it is a diurnal species.
Yellow-breasted chats make various sounds, such as:
- Raspy songs
- Warbling chirps
- Whistling chatters
These sounds and their songs are quite loud during the day.
However, the male yellow-breasted chats often sing at night, and they are a breeding and migratory species in California.
3. Some Songbirds Sing at Night To Impress Mates and During Courtship
Songbirds aren’t known to sing at night, but the northern mockingbird has woken up too many people over the centuries, not just in California.
Researchers have found different reasons for the northern mockingbird singing all night, including the following:
- The mockingbird is trying to impress a potential mate.
- A male is alone and practicing to attract a female.
- The bird sings when it is sad, such as losing a partner.
On a lighter note, the Cornell Lab of Ornithology actually goes on to recommend enticing a female mockingbird to your backyard to shut the male up.
4. Territorial Birds May Chirp To Mark and Protect Their Immediate Range
Territorial birds can chirp to let others know about their immediate range.
If a territorial bird is a bit aggressive, it may proactively chirp or make other noises to discourage many avian species and animals from veering into the area.
For instance, the northern mockingbird may sing at night if its territory is threatened. Songbirds don’t always sing in happiness or to impress a mate.
Often, the northern mockingbird sings out of desperation.
William Jordan, an entomologist and zoologist wrote in the Los Angeles Times decades ago to explain why a male mockingbird he called Jack sang all night, despite having a partner, Jill.
He recorded Jack and played back his song, to which the male mockingbird responded.
Later, Jordan saw other mockingbirds, especially young males, were already in that area, trying to mark their territories.
Old Jack had to sing all night to protect his territory and family, to keep the other birds away.
5. Hatchlings and Hungry Chicks or Birds May Chirp at Night Everywhere
Hatchlings and hungry chicks may chirp all night until they get some food or fall asleep.
A young or adult bird might chirp if it finds food, and that’s threatened by the same, or another, species or other animals.
Any threat and significant discomfort compel most birds to chirp at night.
6. Flocking and Migrating Birds Chirp at Night Along the Pacific Flyway
California is a major route and stopover for millions of migratory birds, and they may chirp all night as they travel along the Pacific Flyway.
Many birds migrate as flocks at night.
These birds have a few reasons to pause en route in the golden state, including:
- Available food and refuge.
- Bad weather and dangers.
- Flocking and regrouping.
- Missing stopover points.
Since the migration is at night for many birds, all such species initiate their call to migrate when people sleep.
Thus, you may hear one or more of the following birds chirp at night around and above your residence in California:
- Cuckoos
- Flycatchers
- Orioles
- Sparrows
- Thrushes
- Sandpipers
- Vireos
- Warblers