A normal pigeon dropping has three parts: a firm dark coil of faeces, a white cap of urates (the bird’s solid urine), and sometimes a little clear liquid. Green, yellow, watery or bloody droppings can follow diet or illness. Colour alone cannot name a disease, so a change that lasts more than a day, or comes with a fluffed, quiet bird, needs an avian vet or rescue.
Please note: this article is general information and is not a substitute for advice from an avian vet or a licensed wildlife rehabilitator. If you have found an injured or sick bird, contact a vet or your local rescue (see our list of pigeon-friendly rescue centres).
What normal pigeon droppings look like
In a healthy bird the faeces form a solid, coiled, worm-like piece that is usually brown, grey-green or dark green. A granular white cap of urates sits on one side, and a small amount of clear liquid urine may lie around the edge. VCA Animal Hospitals describes these three components for pet birds in general, and the same pattern is what you see under a healthy pigeon.
Diet changes the colour of the dark part. Seed-fed birds tend to pass firmer, darker droppings; birds that have eaten a lot of greens, fruit or coloured pellets can pass greener, wetter or even orange-tinted faeces for a short time. Young squabs still on crop milk produce softer droppings, and a hen about to lay often passes one unusually large dropping after holding waste overnight. Both are normal. Keepers often judge the morning dropping: a tight coil with a clear white cap is the usual sign that the birds rested well (Australian Pigeon Company).
Why is pigeon poop white?
The white part is not faeces. It is urates: uric acid crystals from the kidneys. Birds have no bladder or urethra, so they do not pass a separate stream of urine the way mammals do. Nitrogen waste leaves the body as this pale paste, together with the faeces and a little liquid urine, through one opening under the tail (the cloaca).
That pasty white cap is also why dried pigeon droppings stick so firmly to stone, cars and window ledges. For safe cleaning methods, see how to clean pigeon poop. Dried droppings can carry organisms that affect people if dust is stirred up, so wet the material first and wash your hands; see whether pigeons carry diseases.
Green pigeon droppings
Dark green faeces with a normal white cap can be harmless after a meal of greens. Concern starts when droppings turn bright or lime green, become slimy or watery, or when the bird has stopped eating. A pigeon that has not eaten for some time often passes small, dark green droppings with little solid matter, because bile and gut mucus still flow when there is almost no food in the bowel.
Lasting lime-green droppings, including green urates, can go with liver disease or infection. In other pet birds, VCA notes that chlamydiosis (psittacosis) may produce lime-green faeces and urates; pigeons have their own list of infections that can look similar, including bacterial disease, coccidiosis, canker that involves the liver, and paramyxovirus. Colour cannot tell you which. A vet can examine a faecal smear. More detail is on green pigeon poop. Isolate a sick bird from others while you wait.
Yellow pigeon droppings
Yellow staining in the urates, or yellow liquid around the dropping, can point to liver trouble. Possible causes include bacterial infection (including salmonella or paratyphoid), canker in pigeons that has reached the liver, or toxins. Some foods, such as a large amount of carrot, and some vitamin supplements, can tint droppings for a day or two.
If the yellow colour lasts, or the bird is fluffed up and quiet, contact a vet. Dedicated notes are on yellow pigeon poop.
Watery droppings
A wide wet patch around an otherwise normal coil is often extra urine (polyuria), not true diarrhoea. VCA draws this distinction clearly: diarrhoea means the faecal part itself has turned mushy or liquid. Extra urine can follow heat, a lot of fruit or other watery food, fear, handling or travel. It can also follow kidney disease or some toxins, including zinc.
Watery droppings that last more than a day, or that come with weight loss, a twisted neck or trouble picking up grain, are a warning. Paramyxovirus is one cause to rule out; see pigeon neck twisting. True diarrhoea that lasts more than 24 hours is an urgent reason to contact an avian vet, as VCA advises for pet birds.
Red, black or undigested food
Red or black droppings may be blood, or they may be food pigment. Berries and some coloured pellets can stain faeces red, purple or orange for a short time. Lead toxicity can cause bloody urine, which may make droppings look red or black. Blood can also come from the bowel, kidneys or reproductive tract.
Whole, undigested grains in the faeces suggest the gut is not breaking food down properly. Bubbly droppings, a sudden drop in how often the bird goes, or “pea-soup” faeces are other changes VCA lists as abnormal. Any of these that last more than a day need a vet rather than guesswork at home.
Do pigeons pee, and why so many droppings?
Pigeons get rid of liquid waste, but not as a separate stream. The clear liquid in a dropping is urine; the white cap is urates; the dark coil is faeces. They pass droppings often because food moves through a short gut and they eat through the day. A hen holding waste before laying, or a bird that has not gone overnight, may then pass one large morning dropping. That is normal.
A pigeon can also pass a dropping in flight. Many droppings fall when the bird is perched or just as it leaves a ledge, which is why people standing under a flushing flock sometimes get hit.
When to get help
Contact a vet or a pigeon rescue if a bird has unusual droppings and any of the following:
- It is fluffed up, sleepy or not eating.
- Droppings stay lime green, yellow, bloody, black, bubbly or watery for more than a day.
- You can feel a sharp keel (the bird has lost weight).
- It has a twisted neck, poor balance or cannot pick up food.
- You see whole undigested grain in many droppings.
Wash your hands after touching droppings or a sick bird. See sick pigeon symptoms if you are unsure whether the pigeon is ill.
Pigeon dropping FAQs
What should pigeon droppings look like?
A firm dark coil (brown to dark green) with a white cap of urates, and sometimes a little clear liquid around the edge.
Why is pigeon poop white?
The white cap is urates, a pasty form of uric acid from the kidneys. Birds do not have a bladder.
Is green pigeon poop always a sign of illness?
No. Greens in the diet can make formed droppings darker green. Bright lime, slimy or watery green droppings, or a bird that has stopped eating, need a vet. See green pigeon poop.
What do yellow pigeon droppings mean?
Yellow urates can point to liver trouble, though some foods and supplements tint droppings for a day or two. See yellow pigeon poop.
Is a watery dropping the same as diarrhoea?
Not always. Extra clear liquid is often extra urine. Diarrhoea means the faecal coil itself has become mushy or liquid.
Can pigeon droppings make people ill?
Dried droppings can carry organisms if dust is inhaled. Wet the mess before you clean it, wear gloves, and wash your hands. See whether pigeons carry diseases and how to clean pigeon poop.
Sources
Primary references used for this page:
- VCA Animal Hospitals , Birds: Abnormal Droppings (three parts of a dropping, diet pigments, polyuria versus diarrhoea) (opens in new tab)
- Australian Pigeon Company , Dropping interpretation (fancier notes on formed versus watery droppings) (opens in new tab)
Last updated 8 November 2026 · Health