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Rough-crested malkoha

Rough-crested malkoha 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 Rough-crested malkoha rather than just read about it. In short: The rough-crested malkoha (Dasylophus superciliosus) is a species of cuckoo in the family Cuculidae. It is endemic to Luzon Island in the Philippines.

Rough-crested malkoha — main illustration
Rough-crested malkoha — illustration

Key takeaways

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

Reference excerpt

The rough-crested malkoha (Dasylophus superciliosus) is a species of cuckoo in the family Cuculidae. It is endemic to Luzon Island in the Philippines. Its natural habitat is tropical moist lowland forest. It is declining due to habitat loss and hunting.

Description and taxonomy It is large, with a long tail and a unique crest. It is sexually monomorphic. Its upperparts, wings, and tail are black with bluish green gloss. Its superciliary, or eyebrow, is composed of long, loosely-webbed red feathers running from its lores to its nape. Its graduated tail feathers are tipped white, and its underparts are black with a dull greenish tinge.

Subspecies Two subspecies are recognized

D.s. superciliosus: Southern Luzon; red wattle and longer crest D. s. cagayanesis: Northern Luzon; yellow wattle and short crest. Cagayanensis is smaller, with less extensive and shorter superciliary crest and with olive wash on underparts compared to superciliosus.

Ecology and behavior It feeds on insects, especially favouring caterpillars and small mammals, reptiles and amphibians. Forages in the lower levels and likes climbing vines and tangles. Usually observed alone or in small groups. Not much information on breeding data but believed to breed from May to June. A nest was found to have 3 eggs but not enough data to assume clutch size.

Habitat and conservation status Its natural habitats are tropical moist lowland forest up to 800 meters above sea level. The IUCN has classified the species as least Concern where it is said to be locally common. However, the population is believed to be declining due to deforestation from land conversion, Illegal logging and slash-and-burn farming. It is found in multiple protected areas such as Mount Banahaw, Mount Makiling, Mount Isarog, Bataan National Park and Northern Sierra Madre Natural Park but like all areas in the Philippines, protection is lax and deforestation and hunting continues despite this protection on paper.

References

Illustrations

Rough-crested malkoha illustration
Rough-crested malkoha illustration
Rough-crested malkoha: Head feather pattern
Head feather pattern

Worked examples

Example 1 — a first encounter with Rough-crested malkoha

Start with the simplest possible case. Write down what Rough-crested malkoha 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 Rough-crested malkoha 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 Rough-crested malkoha 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 Rough-crested malkoha

In research
Rough-crested malkoha 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 Rough-crested malkoha 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
Rough-crested malkoha is common in secondary-school and first-year university syllabi. It links to neighbouring topics Birds described in 1823, Birds of Luzon, Cuculiformes stubs, so understanding it makes those chapters shorter.
In everyday life
Look for Rough-crested malkoha 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 Rough-crested malkoha in 20 minutes

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

Frequently asked questions

What is Rough-crested malkoha in simple terms?

The rough-crested malkoha (Dasylophus superciliosus) is a species of cuckoo in the family Cuculidae. It is endemic to Luzon Island in the Philippines.

Why does Rough-crested malkoha 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 Rough-crested malkoha?

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 Rough-crested malkoha.

Tags

  • Birds described in 1823
  • Birds of Luzon
  • Cuculiformes stubs
  • Dasylophus
  • Endemic birds of the Philippines
  • IUCN Red List least concern species
  • Taxa named by Charles Dumont de Sainte-Croix

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