Identify A Plain Bellied Water Snake In 3 Easy Steps

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Post on Feb 09, 2025

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Identify a Plain-Bellied Water Snake in 3 Easy Steps

The plain-bellied water snake ( Nerodia erythrogaster ) is a common non-venomous snake found throughout much of the eastern and central United States. However, its often drab coloration can make identification tricky, especially for novice herpetologists. This guide will walk you through three simple steps to confidently identify a plain-bellied water snake.

Step 1: Observe the Body Shape and Size

Plain-bellied water snakes are relatively large snakes, typically ranging from 2 to 4 feet in length, though some individuals can reach over 5 feet. Their bodies are robust and somewhat heavy, with a cylindrical shape. Look for these key characteristics:

• Size: Measure the snake if possible, or at least visually estimate its length. A large snake fitting the other characteristics is more likely to be a plain-bellied water snake.
• Body Shape: Avoid confusing it with thinner, more slender snakes. The plain-bellied water snake has a noticeable girth.
• Head Shape: The head is relatively distinct from the neck but not dramatically so, unlike some venomous snakes.

Important Note: Size and body shape alone are not definitive identification factors. Always consider the other steps below to ensure accurate identification.

Step 2: Examine the Color and Pattern

The coloration of the plain-bellied water snake is highly variable, contributing to misidentification. While the "plain belly" is a key feature, the back coloration can range significantly. Focus on these elements:

• Belly Color: The belly is typically a pale color, ranging from creamy white to yellowish or even a pale orange. This is often unspotted or has only faint markings, hence the name "plain-bellied." This is arguably the most reliable identification feature.
• Back Color: The dorsal (back) coloration can vary greatly. It can be olive green, brown, reddish-brown, or even black. Some individuals may have darker crossbands or blotches, but these are usually indistinct.
• No distinct pattern: Avoid mistaking it for other snakes with strong patterns. The relatively uniform coloration, even with subtle variations, is crucial.

Remember: The combination of a plain belly and variable dorsal coloration is key here.

Step 3: Consider the Habitat and Location

Plain-bellied water snakes are aquatic snakes, strongly tied to water sources. Knowing the environment where you encountered the snake can significantly aid in identification.

• Near Water: They are almost always found near water – rivers, lakes, ponds, marshes, and even slow-moving streams. Finding a snake fitting the other criteria near water strongly increases the likelihood of it being a plain-bellied water snake.
• Geographic Location: Confirm if the snake's location falls within the known range of the plain-bellied water snake. This information is readily available online through herpetological resources and field guides.

Disclaimer: This guide provides general information for identification. If you are unsure about the identification of a snake, or if you are bitten, seek professional help from a qualified herpetologist or medical professional immediately. Never handle a snake unless you are absolutely certain of its identity and have the appropriate safety precautions.

Frequently Asked Questions (FAQ)

Q: How can I differentiate a plain-bellied water snake from a venomous snake?

A: Venomous snakes often have distinct head shapes (triangular), keeled scales (giving a rougher texture), and more defined patterns. However, positive identification should never be based on a single feature. The plain belly, in combination with the other characteristics and habitat, is crucial for distinguishing it from potentially venomous species.

Q: What should I do if I encounter a plain-bellied water snake?

A: Admire it from a safe distance! These snakes are non-venomous and generally not aggressive, but they may bite if threatened. Give it space, and it will likely move away on its own.

Q: Where can I find more information about identifying snakes?

A: Numerous online resources and field guides provide detailed information on snake identification. Check local herpetological societies or university websites for reliable resources.

By following these three steps, you’ll be well on your way to confidently identifying the intriguing and often misunderstood plain-bellied water snake. Remember safety first!