biology

Gough moorhen

Gough moorhen 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 Gough moorhen rather than just read about it. In short: The Gough moorhen (Gallinula comeri) is a medium-sized, almost flightless bird that is similar to the common moorhen (Gallinula chloropus), but is smaller, stockier, and has shorter wings. The bird has a distinctive yellow-tipped red bill and red frontal shield.

Key takeaways

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

Reference excerpt

The Gough moorhen (Gallinula comeri) is a medium-sized, almost flightless bird that is similar to the common moorhen (Gallinula chloropus), but is smaller, stockier, and has shorter wings. The bird has a distinctive yellow-tipped red bill and red frontal shield. Its first account was written in 1888 by the polar explorer George Comer, whom the specific name comeri commemorates. This bird is found only on two remote islands in the South Atlantic. The Gough moorhen was originally endemic to Gough Island, but in 1956 was introduced to Tristan da Cunha, an island in the same archipelago which was formerly home of the now extinct Tristan moorhen (Galinula nesiotis). On the basis of DNA sequencing of both recently collected and historical material from both of the archipelago's moorhen species, Groenenberg et al (2008) concluded that the genetic distances between G. nesiotis and G. comeri are of at least the same size as those found between subspecies of common moorhen (G. chloropus) in the literature. They propose that the extinct moorhen of Tristan (G. nesiotis) and the moorhens that live on Gough and Tristan today (G. comeri) be regarded as subspecies: Gallinula nesiotis nesiotis and Gallinula nesiotis comeri. On Gough Island, it appears that the bird's future is secure with the island being a nature reserve and a World Heritage Site. In the mid-1990s, it was estimated that 2,500 breeding pairs existed on Gough Island. Gough Island is considered the least disturbed, major, cool-temperate island ecosystem in the South Atlantic Ocean and hosts one of the most important sea-bird colonies in the world, containing 54 bird species, 22 breeding species, and four threatened species. However, on Tristan da Cunha, it is not classified as a native species and therefore is not protected.

References

External links BirdLife Species Factsheet. ARKive - images and movies of the Gough Island moorhen (Gallinula comeri) "Description of a new gallinule, from Gough Island" - J.A. Allen, Bulletin of the American Museum of Natural History, Vol.4, Art.6, 1892. p. 57-58 Official Gough Island website website A.J.Beintema

Illustrations

Worked examples

Example 1 — a first encounter with Gough moorhen

Start with the simplest possible case. Write down what Gough moorhen 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 Gough moorhen 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 Gough moorhen 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 Gough moorhen

In research: Gough moorhen 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 Gough moorhen 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: Gough moorhen is common in secondary-school and first-year university syllabi. It links to neighbouring topics Birds described in 1892, Birds of Tristan da Cunha, British Atlantic territories stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Gough moorhen 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 Gough moorhen in 20 minutes

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

Frequently asked questions

What is Gough moorhen in simple terms?

Why does Gough moorhen 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 Gough moorhen?

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 Gough moorhen.