biology

Red-legged crake

Red-legged crake 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 Red-legged crake rather than just read about it. In short: The red-legged crake (Rallina fasciata) is a waterbird in the rail and crake family, Rallidae. Description It is a medium-large crake (length 24 cm).

Key takeaways

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

Reference excerpt

The red-legged crake (Rallina fasciata) is a waterbird in the rail and crake family, Rallidae.

Description It is a medium-large crake (length 24 cm). Its head, neck and breast red-brown, paler on throat. Its upper parts are grey-brown. Underparts and underwings are barred black and white. Its bill is green and its legs are red.

Distribution and habitat Found in far north-eastern India, eastern Bangladesh, Burma, Thailand, Malaysia, Singapore, the Philippines and Indonesia. It has also been recorded as a vagrant to north-western Australia, Lanyu near Taiwan, and Palau. It is located in dense vegetation close to permanent wetlands, from paddy fields to dense rainforest. It is partly migratory, but the nature of its movements are poorly understood.

Behaviour

Breeding

The breeding behaviour or the red-legged crake is poorly known. The nest has not been described, but it is reported to have a clutch of 3-6 dull-white eggs, which both parents incubate. The chicks are covered in dark brown down on hatching.

Voice Series of descending croaks, screams and grunts.

Conservation With a large range and no evidence of significant decline, this species is assessed as being of least concern.

References

BirdLife International. (2007). Species factsheet: Rallina fasciata. Downloaded from http://www.birdlife.org on 14/6/2007 Marchant, S.; Higgins, P.J.; & Davies, J.N. (eds). (1994). Handbook of Australian, New Zealand and Antarctic Birds. Volume 2: Raptors to Lapwings. Oxford University Press: Melbourne. ISBN 0-19-553069-1 Smythies, B.E.; & Davison, G.W.H. (1999). The Birds of Borneo. Natural History Publications (Borneo), in association with the Sabah Society: Kota Kinabalu. ISBN 983-812-028-6

Illustrations

Worked examples

Example 1 — a first encounter with Red-legged crake

Start with the simplest possible case. Write down what Red-legged crake 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 Red-legged crake 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 Red-legged crake 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 Red-legged crake

In research: Red-legged crake 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 Red-legged crake 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: Red-legged crake is common in secondary-school and first-year university syllabi. It links to neighbouring topics Birds described in 1822, Birds of Southeast Asia, Gruiformes stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Red-legged crake 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 Red-legged crake in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Red-legged crake 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 Red-legged crake out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Red-legged crake in simple terms?

The red-legged crake (Rallina fasciata) is a waterbird in the rail and crake family, Rallidae. Description It is a medium-large crake (length 24 cm).

Why does Red-legged crake 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 Red-legged crake?

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 Red-legged crake.