biology

Silver teal

Silver teal is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Silver teal rather than just read about it. In short: The silver teal or versicolor teal (Spatula versicolor) is a species of dabbling duck in the genus Spatula. It breeds in South America.

Key takeaways

Silver teal belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Silver teal to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Silver teal from memory before moving on to harder problems.

Reference excerpt

The silver teal or versicolor teal (Spatula versicolor) is a species of dabbling duck in the genus Spatula. It breeds in South America. Between April and June they prefer reed beds and will lay 6 to 10 creamy-pink eggs. The eggs will hatch after 25 to 27 days. As with swans and geese, both parents will rear the ducklings. A pair may bond long term. It lives on fresh water in small groups, and feeds primarily on vegetable matter such as seeds and aquatic plants. The silver teal's range includes southern Bolivia, southern Brazil, Paraguay, Argentina, Chile, Uruguay, South Georgia, South Sandwich Islands, and the Falkland Islands. The southernmost birds migrate to southern Brazil in the winter. Silver teals are on the whole placid ducks but may be protective of eggs, young and females.

Description They have a black cap that extends below the eyes, and a bluish bill with a yellow tip. They also have a green speculum with a white border. The female's plumage is slightly duller and has less yellow at the base of the beak. The Puna teal was previously regarded as a subspecies of this bird. Currently, there are two subspecies:

S. versicolor versicolor northern silver teal located in Paraguay, southern Bolivia, and southern Brazil. S. versicolor fretensis southern silver teal located in southern Chile, Argentina, and the Falkland Islands.

References

Sources

Clements, James, (2007) The Clements Checklist of the Birds of the World, Cornell University Press, Ithaca "Dabbling Ducks". Connecticut Waterfowl Trust. April 2, 2003 (Retrieved October 31, 2006).

Illustrations

Worked examples

Example 1 — a first encounter with Silver teal

Start with the simplest possible case. Write down what Silver teal claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Silver teal before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Silver teal ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Silver teal

In research: Silver teal appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Silver teal in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Silver teal is common in secondary-school and first-year university syllabi. It links to neighbouring topics Anseriformes stubs, Birds described in 1816, Birds of Argentina, so understanding it makes those chapters shorter.
In everyday life: Look for Silver teal outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Silver teal in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Silver teal means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Silver teal out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Silver teal in simple terms?

The silver teal or versicolor teal (Spatula versicolor) is a species of dabbling duck in the genus Spatula. It breeds in South America.

Why does Silver teal matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Silver teal?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Silver teal.