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Redditor Shares How Birds Do Not Have Bladders or Urethras; Rather, They Excrete Their Poo and Pee Together

Sophia
by Sophia
24 Nov 2022

Birds have a weird little biology fact that tends to surprise people, and this Reddit post turned that fact into a full-on Today I Learned moment. Instead of separate systems for pee and poop, birds send both out together, which is why droppings can look so different from what people expect.

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That discovery kicked off a chain of comments, jokes, and a few reminders about why bird mess is such a pain on cars, sidewalks, and just about anything else it lands on. The thread keeps circling back to the same odd detail, birds really do handle waste in their own way.

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And once Reddit got hold of it, the conversation went exactly where you would expect. Read on.

A Redditor named u/tallyhallic found out that birds convert their nitrogen into uric acid, which is then mixed with solid waste from the intestines and expelled.

A Redditor named u/tallyhallic found out that birds convert their nitrogen into uric acid, which is then mixed with solid waste from the intestines and expelled.
u/tallyhallic
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The uric acid is also why bird poop is white instead of brown.

The uric acid is also why bird poop is white instead of brown.
mercurynews

In reality, bird feces itself isn't white. Unlike mammals, birds lack separate outlets for excrement and urine. Through the cloaca, both waste products are expelled simultaneously.

We've gathered a selection of the most upvoted comments from Redditors for you to read below.

Meat needs curing before you can eat it.

Meat needs curing before you can eat it.
Reddit

Birds excrete both waste products in a single process, which is quite different from mammals, and this adaptation reflects their evolutionary history.

Research shows that avian physiology has developed to optimize weight and flight efficiency, showcasing the fascinating complexity of animal biology.

The unique adaptations in bird physiology reveal a remarkable evolutionary strategy aimed at enhancing survival. The absence of a bladder not only contributes to their weightlessness but also significantly improves flight efficiency, as noted in research from the University of Cambridge. This intriguing facet of avian biology underscores the intricate relationship between form and function, illustrating how evolutionary processes have shaped these creatures to thrive in their environments.

All the other animals are laughing at you.

All the other animals are laughing at you.
Reddit

Same hole, human losers.

Same hole, human losers.
Reddit

Dysfunction in the renal system can decrease this process.

Dysfunction in the renal system can decrease this process.
Reddit

From a behavioral perspective, understanding animal biology can foster empathy and respect for wildlife.

Studies in animal behavior emphasize how knowledge about an animal's natural processes can enhance human-animal interactions, reducing misconceptions.

This understanding can lead to a greater appreciation for wildlife and encourage conservation efforts.

It’s the same kind of drama as the Redditor slandered on Facebook for refusing to rehome pets for a friend.

This situation prompts deeper discussions about understanding animal biology and behavioral patterns.

In contrast to mammals, which primarily excrete nitrogenous wastes in the form of urea, birds convert it to uric acid or guanine, which minimizes water loss. The result is a paste that is white and sticky.

Therefore, the white portion is actually bird poop; the dark center is the actual feces. Here are more comments below.

The white stuff in bird poop.

The white stuff in bird poop.
Reddit

This Redditor now knows why their crap ruins the finish on your car.

This Redditor now knows why their crap ruins the finish on your car.
Reddit

Another explains why you have to get it off your car immediately.

Another explains why you have to get it off your car immediately.
Reddit

Social psychologists highlight how sharing knowledge about animal biology can strengthen community bonds through shared learning experiences.

Engaging in discussions about animal behavior can create a more informed community that values its natural surroundings.

This incident highlights the need for empathy and understanding toward all living creatures.

This Redditor thinks most bird poop is mostly calcium.

This Redditor thinks most bird poop is mostly calcium.
Reddit

For this Redditor, it's shampoo and conditioner mixed together.

For this Redditor, it's shampoo and conditioner mixed together.
Reddit

It damages your car paint if you don't remove it right away.

It damages your car paint if you don't remove it right away.
Reddit

Some of you must have wondered at one point or another why a bird's poop is whitish. Well, now you have your answers, and Redditors are glad to know why bird poop stains their cars.

What are your opinions regarding this discovery? Leave them in the comments below and share this post as well.

Organizing community events that focus on wildlife education, such as birdwatching or nature walks, can offer hands-on experiences that deepen understanding and appreciation for avian species.

By connecting people with nature, communities can cultivate a sense of stewardship for local wildlife.

Grasping the intricacies of avian physiology, such as the unique way birds excrete waste, deepens our understanding of wildlife and their remarkable adaptations. This particular adaptation not only highlights the efficiency of avian biology but also reflects the evolutionary pressures birds face in their environments.

The information shared about birds' lack of bladders and urethras underscores the significance of educating ourselves about these creatures. Such knowledge fosters responsible interactions with nature and ultimately supports conservation initiatives aimed at protecting these fascinating animals.

By nurturing empathy and a deeper understanding of avian life, we can cultivate a more thoughtful and compassionate approach to our engagement with wildlife, ensuring that we respect and preserve their habitats for future generations.

Implementing educational programs that focus on avian biology can help dispel myths and promote understanding of wildlife.

Bird poop biology is intense, but wait until you read about the parrot owner whose vet lectured her over an all-seed diet.

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