What does the egg of the Lesser Auk (Alca torda) look like?
The Lesser Auk is also known as the Razorbill. It is a marine bird, or sea bird, in the Alcidae family. It lives in the Northern Hemisphere along rocky reefs and coastal cliffs. Approximately 60% to 70% of the Lesser Auk population breeds in Iceland.
The female Lesser Auk lays one egg per year on a bare ledge on a coastal cliff, between late May and early June.
The egg is oval and elongated in shape.
Continue reading “Auk Eggs”
What does a lion’s nose look like?
When a lion cub is born is has a pink nose.
Small black spots appear as the lion ages. Young adult lions have spotted noses. Middle-aged lions have patchy noses with large black spots.
The lion’s nose is completely black by the time it is old, at about eight years of age.
Continue reading “Lion’s nose”
A female lion is called a lioness. The lioness has 1-4 young, called cubs. Cubs are born with their eyes closed. They open their eys after 3-10 days.
The lioness is very protective of her cubs, particularly for the first 8 months (240 days), before they join the rest of the pride. Other lionesses and their cubs will live together and look after all of the cubs. This is called allomothering.
Continue reading “Lioness and her cubs”
Bird eggs can be different sizes, shapes, and colours.
Large birds, such as the ostrich and the emu, have large eggs.
Small birds, such as the finch and the sparrow, have small eggs.
Bird eggs can be round, oval, or pointed.
Continue reading “Bird Eggs”
A Sika Deer (Cervus nippon) has excellent vision. It can detect movement from a long distance away.
A Sika Deer does not have a round pupil, like the pupil of a human eye. It does not have a slitted pupil, like the pupil of a domestic cat.
A Sika Deer has an elongated pupil. It looks like a raisin, or a flattened grape.
A full arc of vision is 360 degrees. A human has an arc of vision of 120 degrees (a human cannot see objects behind it). A Sika Deer has an arc of vision of 310 degrees, which means that it can see almost all around it.
Continue reading “Sika Deer’s eyes”
What are the similarities or differences between the eyes of a Cat (Felis catus), Cheetah (Acinonyx jubatus), Leopard (Panthera pardus), Lion (Panthera leo), and Tiger (Panthera tigris)?
The Domestic Cat is nocturnal, active at night. The Cheeth and the Lion are diurnal, active during the day. The Leopard and the Tiger are crepuscular, active at dawn and dusk.
The eyes of a nocturnal animal have vertical pupils that look like a black line, called slitted eyes. The eyes of a diurnal or crepuscular animal have round pupils.
Continue reading “Cat, Cheetah, Leopard, Lion, Tiger Eyes: What’s the difference?”
The Chameleon has zygodactylous feet. Zygo means paired, joined, or fused, and dactyl means digit (finger or toe). Scientists would like a more appropriate word, because the chameleon does not have true zygodactylous feet, like the parrot.
It has five toes on each foot. The toes are grouped into two fascicles (a bundle of structures).
Two or three toes in each fascicle are fused together, which makes its feet look like tongs (the tongs people use in the kitchen to pick up food).
Continue reading “Zygodactylous Feet – Chameleon Feet”
The Chameleon has very distinctive eyes.
The upper and lower eyelids are joined, with only a pinhole large enough for the pupil to see through.
Each eye can pivot and focus independently, allowing the chameleon to observe two different objects simultaneously.
Continue reading “Chameleon Eyes”
The Vervet Monkey (Chlorocebus pygerythrus), from Africa, lives in a hierarchical group. A hierarchy is a system of status or authority, from the leader or leaders to each member of the family order.
Baby Vervet Monkeys play and fight amongst each other. Babies younger than three years old fight for hierarchical positions. Young Vervet Monkeys older than three years old fight more aggressively and for conflict reasons.
Continue reading “Vervet Monkey – Babies”
What does a tiger’s tongue look like?
Mammals have tongues. A tongue is a muscle. The left and right sides of the tongue are separated by a vertical section of fibrous tissue, called a lingual septum. A tongue has a tip and a blade (the part just behind the tip).
A tongue is used for chewing, tasting, licking, swallowing, washing, and making sounds. A tongue’s upper surface is covered with taste buds. The tongue has nerves and blood vessels, and is kept moist with saliva. It can be pink, reddish, or dark-coloured (like a giraffe’s tongue).
A human’s tongue is about 10 centimetres (4 inches) long. The Tiger (Panthera tigris) has a tongue that is about 18-23 centimetres (7-9 inches) long.
Continue reading “Tongue of a Tiger”
What does a butterfly eye look like?
A butterfly has two compound eyes.
Each compound eye has up to 17,000 ommatidia. Ommatidia are smaller round eyes within the larger compound eye. Ommatidia are image-forming eyes or light-receptor eyes, each with a short visual focus, that acts like a kaleidoscope.
Continue reading “Butterfly Eye”
How does a bird take off for flight?
It takes a lot of energy for a bird to go from standing to flying as it takes off for flight.
A small bird does a simple jump and flaps its wings.
A large bird needs more than a jump. A large bird takes a run up, just like a plane does when it taxies on the airport runway.
Continue reading “How does a bird take off for flight?”
Why do some vultures have a featherless neck – or almost featherless neck?
A vulture’s head and neck are featherless as an adaptation for hygiene.
Continue reading “Why do some vultures have a featherless neck?”
The Banded Mongoose (Mungos mungos) from Africa is a small, short-legged carnivorous mammal that lives in burrows, called dens. It has long, strong claws that dig through soil.
Its claws do not retract, so they are always visible. There are five toes on each foot, and each toe has a medium-sized claw.
Continue reading “Mongoose Claws”