biology

Grey imperial pigeon

Grey imperial pigeon 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 Grey imperial pigeon rather than just read about it. In short: The grey imperial pigeon (Ducula pickeringii) is a species of bird in the family Columbidae. It is found in the Sulu Archipelago, Miangas and Talaud Islands.

Key takeaways

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

Reference excerpt

The grey imperial pigeon (Ducula pickeringii) is a species of bird in the family Columbidae. It is found in the Sulu Archipelago, Miangas and Talaud Islands. It is a small island specialist where its natural habitats are tropical moist lowland forests and plantations. It is threatened by habitat loss.

Description and taxonomy

Subspecies Three subspecies are recognized:

D. p. pickeringii – Found on islets off of North and Northeast Borneo and the islets in the Sulu Sea from Balabac, Cagayancillo and Sulu Island. D. p. langhornei – Found on West Bolod, East Bolod and Loran; paler with a more defined white ring around eye. D. p. palmasensis – Found on Miangas and Talaud Islands ; paler and less pink on underparts

Behaviour and ecology It has been noted feeding on fruits of figs and Cananga trees. Usually seen singly or in pairs. It sometimes associates with Green imperial pigeon and Pied imperial pigeon. Not much is known about its breeding habits but a female with a developing egg inside was taken in January in Miangas. Juveniles collected in July in Sabah.

Habitat and conservation status

Its natural habitats at tropical moist lowland and primary and secondary forest and cultivated areas with trees. Little is known about its movements. It is reportedly resident on some northern Bornean islands, but certainly moves between Philippine islands, and varied in abundance from 1995 to 1997 on Karakelang, Indonesia. Like other small-island specialists, it presumably wanders in search of food. The IUCN Red List has assessed this bird as Near Threatened with the population estimated at 7,500 to 26,500 mature individuals as of 2025. Its main threat is habitat destruction through both legal and Illegal logging, conversion into farmland and urban development for tourism. Its large size makes it a target of hunters both for food and as a pet. It occurs in a few protected areas like the Turtle Islands National Park, Tunku Abdul Rahman National Park, Maratuas and Pulau Mantanani Bird Sanctuary and Rasa Island where it benefits from the protection of the Philippine cockatoo. Conservation actions proposed are survey in suitable habitat in order to calculate density estimates, better understand movements and ecology and calculate remaining habitat to refine the population estimate. Propose sites/islands supporting key populations for establishment as strict protected areas. Eradicate macaques and black rats from protected islands. Devise and initiate conservation awareness campaigns to control hunting and curb deforestation on key islands. Seek ban on trade in Imperial pigeons. Review taxonomic status of two subspecies (pickeringii and langhornei).

References

External links BirdLife Species Factsheet.

Illustrations

Worked examples

Example 1 — a first encounter with Grey imperial pigeon

Start with the simplest possible case. Write down what Grey imperial pigeon 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 Grey imperial pigeon 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 Grey imperial pigeon 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 Grey imperial pigeon

In research: Grey imperial pigeon 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 Grey imperial pigeon 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: Grey imperial pigeon is common in secondary-school and first-year university syllabi. It links to neighbouring topics Birds described in 1854, Birds of Malesia, Columbiformes stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Grey imperial pigeon 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 Grey imperial pigeon in 20 minutes

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

Frequently asked questions

What is Grey imperial pigeon in simple terms?

The grey imperial pigeon (Ducula pickeringii) is a species of bird in the family Columbidae. It is found in the Sulu Archipelago, Miangas and Talaud Islands.

Why does Grey imperial pigeon 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 Grey imperial pigeon?

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 Grey imperial pigeon.