biology

Grey-crowned Central American squirrel monkey

Grey-crowned Central American squirrel monkey 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-crowned Central American squirrel monkey rather than just read about it. In short: The grey-crowned Central American squirrel monkey (Saimiri oerstedii citrinellus) is a subspecies of the Central American squirrel monkey. Its range is restricted to the Pacific coast of central Costa Rica.

Key takeaways

Grey-crowned Central American squirrel monkey 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-crowned Central American squirrel monkey to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Grey-crowned Central American squirrel monkey from memory before moving on to harder problems.

Reference excerpt

The grey-crowned Central American squirrel monkey (Saimiri oerstedii citrinellus) is a subspecies of the Central American squirrel monkey. Its range is restricted to the Pacific coast of central Costa Rica. The northern end of its range is the Rio Tulin and the southern end of its range is the Rio Grande de Terraba. South of the Rio Grande de Terraba, it is replaced by the black-crowned Central American squirrel monkey, S. oerstedii oerstedii. Populations are very fragmented, and the subspecies does not occur in all locations within its general range. It is the subspecies of Central American squirrel monkey seen in Manuel Antonio National Park in Costa Rica. The grey-crowned Central American squirrel monkey is orange or reddish-orange in color, with a black cap. It differs from the black-crowned Central American squirrel monkey in that the limbs and underparts of the grey-crowned Central American squirrel monkey are less yellowish. Some authorities also consider the cap on the grey-crowned Central American squirrel monkey to be less black than that of the black-crowned Central American squirrel monkey, but other authorities regard this as a feature that varies by age rather than by subspecies. Adults reach a length of between 266 and 291 millimetres (10.5 and 11.5 in), excluding tail, and a weight between 600 and 950 grams (21 and 34 oz). The tail is longer than the body, and between 362 and 389 mm (14.3 and 15.3 in) in length. Males have an average body weight of 829 g (29.2 oz) and females have an average body weight of 695 g (24.5 oz). The grey-crowned Central American squirrel monkey is arboreal and diurnal. It lives in groups containing several adult males, several adult females and juveniles. It is omnivorous, with a diet that includes insects and insect larvae (especially grasshoppers and caterpillars), spiders, fruit, leaves, bark, flowers and nectar. It also eats small vertebrates, including bats, birds, lizards and frogs. It finds its food foraging through the lower and middle levels of the forest. The grey-crowned Central American squirrel monkey was assessed by the International Union for Conservation of Nature (IUCN) as Endangered. This was an improvement from prior assessments, in which the subspecies was assessed as "critically endangered". It is listed as endangered to a small and severely fragmented range amounting to only about 3,500 square kilometers (1,400 sq mi), and continuing habitat loss. There are conservation efforts within Costa Rica to try to preserve this monkey from extinction.

References

External links Titi Conservation Alliance

Illustrations

Worked examples

Example 1 — a first encounter with Grey-crowned Central American squirrel monkey

Start with the simplest possible case. Write down what Grey-crowned Central American squirrel monkey 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-crowned Central American squirrel monkey 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-crowned Central American squirrel monkey 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-crowned Central American squirrel monkey

In research: Grey-crowned Central American squirrel monkey 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-crowned Central American squirrel monkey 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-crowned Central American squirrel monkey is common in secondary-school and first-year university syllabi. It links to neighbouring topics Arboreal mammals, Endangered fauna of North America, Endemic fauna of Costa Rica, so understanding it makes those chapters shorter.
In everyday life: Look for Grey-crowned Central American squirrel monkey 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-crowned Central American squirrel monkey in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Grey-crowned Central American squirrel monkey 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-crowned Central American squirrel monkey out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Grey-crowned Central American squirrel monkey in simple terms?

Why does Grey-crowned Central American squirrel monkey 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-crowned Central American squirrel monkey?

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-crowned Central American squirrel monkey.