Mar 28
Share 'ARKive’s Top Ten Eggs' on Delicious Share 'ARKive’s Top Ten Eggs' on Digg Share 'ARKive’s Top Ten Eggs' on Facebook Share 'ARKive’s Top Ten Eggs' on reddit Share 'ARKive’s Top Ten Eggs' on StumbleUpon Share 'ARKive’s Top Ten Eggs' on Email Share 'ARKive’s Top Ten Eggs' on Print Friendly

ARKive’s Top Ten Eggs

With Easter just a hop, skip and a jump away, and with Channel 4’s fascinating new Easter Eggs Live show catching our attention, we thought we’d crack into the ARKive coll-egg-tion and have a scramble around to eggs-tract some egg-citing eggs to eggs-hibit in our blog. Along the way, we’ve also learned about the eggs-istence of some rather eggs-centric egg-laying and guarding habits, and we hope you’re as eggs-tatic about our finds as we are!

Gooseberry fool?

Peacock butterfly egg image

Peacock butterfly eggs look a lot like gooseberries!

While you might be forgiven for being fooled into thinking that these green globules are plump and juicy gooseberries, they are, in fact, peacock butterfly eggs. The eggs of this species are laid in groups under nettles, usually in May, and hatch two weeks later.

Sunny-side up? Over-easy? Well-done?

Emu egg image

Emu eggs come in various shades of greenish-black

However you like your eggs, there’s no denying that these ones look as though they’ve been char-grilled in their shells! But fear not, these emu eggs are supposed to look like this; they come in various shades of greenish-black and are the size of a small grapefruit. The male emu is an eggs-traordinary guardian, taking sole responsibility for incubating the eggs over the course of two months while the female wanders off to potentially find another mate, and protecting the chicks against predators for several months once they’ve hatched.

100 kids and counting…

Green turtle egg image

Green turtles can lay an impressive number of eggs per nesting season

In the UK, having more than about four siblings would constitute being part of a pretty large and impressive family, but in the world of marine turtles, this is a mere drop in the ocean. Female green turtles produce between 100 and 150 ping-pong-ball-like eggs per clutch, and can lay up to nine separate clutches per breeding season. While this may seem rather a lot, marine turtles don’t guard their nests or look after their young, and with the threat of land- and ocean-dwelling predators, the survival rate of hatchlings is very low.

High-flying hunger games…

Bald eagle egg image

Bald eagle nests are some of the largest of any bird species

Bald eagle nests, made with sticks and lined with moss, grass, seaweed and other vegetation, are some of the largest of any bird species, sometimes reaching several metres in width. These enormous nests presumably provide a comfy and snug environment for the eggs during the 35-day incubation period, yet things can soon turn ugly. By being bigger and louder, the first-born chick is often afforded more parental attention and food, and will even occasionally kill its younger siblings.

Treasures of the deep

California horn shark egg image

Shark eggs, such as this California horn shark egg, are often referred to as ‘mermaid’s purses’

A mermaid’s purse might well sound like something a sea-dwelling siren would keep her money and credit cards in, but a pilfering pickpocket could get a nasty surprise if they were to try to purloin this particular purse as it is actually a shark egg-case! Mermaid’s purses vary greatly in shape, size and colour, depending on the shark species in question.

Eggs-panding eggs

 

Common frog egg image

Common frog eggs are coated in a jelly-like substance

Frog egg masses, often referred to as frogspawn, tend to look rather like a gruesome collection of eyeballs. The female common frog releases between 1,000 and 2,000 eggs at a time, which are covered in a jelly-like coating. This coating expands when it comes into contact with water, providing protection for the tadpoles growing within.

Egg pasta

 

Sea lemon egg image

Pasta del mar – sea lemons produce somewhat pasta-like egg masses

What may look like a delectable strand of abandoned tagliatelle cast into the depths of the ocean is, in actual fact, a mass of sea lemon eggs. A common sea slug around Britain’s shores, the sea lemon produces thousands of eggs at a time which form a long, coiled, ribbon-like mass. These egg masses are produced in the spring and are attached to rocks, so if you take an Easter weekend dip in the sea and find such a structure, we would advise leaving it well alone and not adding it to your carbonara!

Ha-bee Easter!

 

Honey bee egg image

Honey bee egg

A supplier of sugary goodness and a harbinger of spring to many, the honey bee lays its eggs from March to October. Honey bee colonies have a complex structure, formed of the queen, workers and drones, all of which serve different functions. Worker bees have a variety of roles within the colony, with some being tasked with feeding the developing larvae which emerge from the eggs around three days after they are laid.

Eggshellent parenting

 

King penguin egg image

King penguins incubate their egg on their feet

King penguins appear to take parenting very seriously, with each pair keeping a close eye on their precious egg. Incubation is shared by the male and female and is split into two- or three-week cycles, and parental duties remain shared once the chick has hatched. It’s a good job that king penguins don’t let their eggs out of their sight, otherwise they may not believe the chick belonged to them…the chick looks so different to the adult that they were first described as two completely different species!

Eggs-treme monotreme

Short-beaked echidna egg

A short-beaked echidna egg

While the majority of mammals give birth to live young, there are some eggs-treme mammalian species that lay eggs! These eggs-tra special critters are known as monotremes, and the short-beaked echidna is one of them. The echidna’s leathery egg is laid into a pouch on the female’s abdomen, where it is incubated for about ten days before it hatches. The young echidna, or ‘puggle’, remains there until it is 45 to 55 days old.

We hope you’ve enjoyed these eggs-amples of awesome eggs, and that you all have a wonderful Easter weekend!

To watch some incredible scenes of eggs from a wide variety of species hatching live, don’t forget to check out Easter Eggs Live online and tune in to Channel 4 at 8pm on Sunday 31st March and Monday 1st April for some more riveting reports and fascinating footage!

 

Kathryn Pintus, ARKive Text Author

Mar 24
Share 'Endangered Species of the Week: North Island brown kiwi' on Delicious Share 'Endangered Species of the Week: North Island brown kiwi' on Digg Share 'Endangered Species of the Week: North Island brown kiwi' on Facebook Share 'Endangered Species of the Week: North Island brown kiwi' on reddit Share 'Endangered Species of the Week: North Island brown kiwi' on StumbleUpon Share 'Endangered Species of the Week: North Island brown kiwi' on Email Share 'Endangered Species of the Week: North Island brown kiwi' on Print Friendly

Endangered Species of the Week: North Island brown kiwi

Photo of North Island brown kiwi in undergrowth

North Island brown kiwi (Apteryx mantelli)

Species: North Island brown kiwi (Apteryx mantelli)

Status: Endangered (EN)

Interesting Fact: The North Island brown kiwi is more like a mammal than a bird, with fur-like feathers, muscular legs and even cat-like whiskers on its face.

Kiwis are the national bird of New Zealand, and are some of the most unusual of all birds. One of five kiwi species, the North Island brown kiwi is flightless and lives on the ground, where it shelters in a burrow during the day. Its long, thin bill has sensory pits at the end which can detect prey moving underground, while, uniquely among birds, the nostrils are located at the end of the bill, helping the kiwi to locate prey by smell. North Island brown kiwis typically mate for life, and the female produces one of the largest eggs of any bird relative to her own size. The male incubates the eggs, and the chicks hatch fully feathered and are soon able to fend for themselves.

The North Island brown kiwi has undergone a dramatic decline over the last century, largely due to predation by introduced mammals such as dogs, cats and stoats. Fortunately, this intriguing bird has been the subject of concerted conservation efforts, including predator control and the incubation of eggs and rearing of chicks in captivity. Kiwi sanctuaries have also been established to help protect it. Where active conservation has taken place, kiwi numbers have rebounded, giving hope that this national icon can survive into the future.

Find out more about kiwi conservation at Kiwis for Kiwi.

Read about other nocturnal species and about WWF’s Earth Hour on the ARKive blog.

See images and videos of the North Island brown kiwi on ARKive.

Do you have a favourite species? Why not join our campaign to find the World’s Favourite Species and nominate it today!

 

Liz Shaw, ARKive Text Author

Mar 20
Share 'In the News: World Sparrow Day 2013' on Delicious Share 'In the News: World Sparrow Day 2013' on Digg Share 'In the News: World Sparrow Day 2013' on Facebook Share 'In the News: World Sparrow Day 2013' on reddit Share 'In the News: World Sparrow Day 2013' on StumbleUpon Share 'In the News: World Sparrow Day 2013' on Email Share 'In the News: World Sparrow Day 2013' on Print Friendly

In the News: World Sparrow Day 2013

Today marks World Sparrow Day, a day to celebrate and take action for the once-common house sparrow.

Photo of male house sparrow drinking from shallow puddle

Male house sparrow

Often colloquially known as the ‘Cockney sparrow’, the house sparrow is well known to many people as a common and widespread small bird. Of the world’s 26 true sparrow species, it is the house sparrow which has colonised the world as a result of global trade, and is now found on almost every continent.

However, although once a familiar sight in many areas, the house sparrow has undergone a dramatic decline in parts of its range. In the United Kingdom alone, its population has dropped by a staggering 71% since 1977, and sharp declines have also been noted in other countries.

Photo of dead house sparrow carried by domestic cat

House sparrows face many threats, from pollution to predators

The exact reasons for these declines are unclear, but may include a combination of pollution, a reduction in food availability, a loss of suitable habitat and nesting sites, increased predation and disease. Urban noise has also been linked with sparrow declines, possibly as it prevents the adult birds from hearing the hunger calls of their chicks.

Celebrating sparrows

The idea for World Sparrow Day, which was first celebrated in 2010, came from the Nature Forever Society, who saw its potential for making a positive difference to the fate of the house sparrow. It is hoped that the day can help convey the message about the need to conserve this and other common bird species, as well as marking a day of celebration of the common biodiversity which we can often take for granted.

Photo of tree sparrow feeding in winter

The tree sparrow is another sparrow species which is in decline in parts of its range

Those involved hope to inspire as many people as possible to join the celebrations and get involved in the conservation of house sparrows and their habitats. Suggested actions include talking about sparrows on social media websites and highlighting their plight, as well as creating sparrow habitats and providing sparrows with nest boxes and feeding stations.

World Sparrow Day is therefore a chance for everyone to rise to the challenge of saving this once-common and much-loved small bird.

 

Find out more about World Sparrow Day at World Sparrow Day and the Nature Forever Society.

You can also find out more about the day at RSPB News – World Sparrow Day.

View photos and videos of sparrow species on ARKive.

Liz Shaw, ARKive Text Author

Mar 13
Share 'What is the World’s Favourite Species?' on Delicious Share 'What is the World’s Favourite Species?' on Digg Share 'What is the World’s Favourite Species?' on Facebook Share 'What is the World’s Favourite Species?' on reddit Share 'What is the World’s Favourite Species?' on StumbleUpon Share 'What is the World’s Favourite Species?' on Email Share 'What is the World’s Favourite Species?' on Print Friendly

What is the World’s Favourite Species?

It’s ARKive’s 10th birthday this year and we want you to join our celebrations by helping us find the World’s Favourite Species.

We think all the world’s species are amazing but which is your favourite? Which animal, plant or fungi is so special that it deserves to be crowned the World’s Favourite Species?

Nominate today!

Nominations are now open and it couldn’t be simpler to vote  - simply find your favourite species on ARKive and click the ‘Nominate Today!’ button.

You have until 3rd April to suggest your favourites (and yes, you can choose more than one species!), after which we’ll draw up the shortlist and put it to the public vote. This shortlist will be whittled down to determine the Top Ten World’s Favourite Species – as chosen by you.

We can’t do it without your input – please spare a few moments to make your nomination TODAY!

Need some inspiration?

There are over 15,000 species on ARKive to nominate, so here are a few suggestions to start you off…

Will you nominate the polar bear - our most visited species so far this month?

Photo of polar bear with cubs

What about a newly discovered species? Is the Louisiana pancake batfish your favourite?

Louisiana pancake batfish

The osprey features as our no.1 video, but will it be no. 1 species?

Photo of osprey in flight carrying fish

Vote now, and share your nominations on Facebook and Twitter!

Feb 16
Share 'Endangered Species of the Week: Golden-cheeked warbler' on Delicious Share 'Endangered Species of the Week: Golden-cheeked warbler' on Digg Share 'Endangered Species of the Week: Golden-cheeked warbler' on Facebook Share 'Endangered Species of the Week: Golden-cheeked warbler' on reddit Share 'Endangered Species of the Week: Golden-cheeked warbler' on StumbleUpon Share 'Endangered Species of the Week: Golden-cheeked warbler' on Email Share 'Endangered Species of the Week: Golden-cheeked warbler' on Print Friendly

Endangered Species of the Week: Golden-cheeked warbler

Photo of male golden-cheeked warbler perched on tree

Golden-cheeked warbler (Dendroica chrysoparia)

Species: Golden-cheeked warbler (Dendroica chrysoparia)

Status: Endangered (EN)

Interesting Fact: The golden-cheeked warbler is the only bird species whose breeding range occurs entirely within the state of Texas, USA.

A small, attractively marked bird, the golden-cheeked warbler is named for the male’s bright yellow face. The female is similar to the male in appearance, but has less distinctive markings. This colourful species feeds on insects and spiders, and builds its nest from strips of juniper bark, which it weaves together with spider silk and insect cocoons. The nest is then lined with grass, hair or down. The golden-cheeked warbler breeds only in central Texas, but migrates south to spend the winter in Mexico and other parts of Central America.

The main threat to the golden-cheeked warbler is the clearance of its forest habitat, due for example to agriculture, development, logging and mineral extraction. Both its breeding and wintering habitats are under threat, but this species’ rather restricted breeding range makes it particularly vulnerable to habitat loss. The golden-cheeked warbler is listed as ‘Endangered’ on the U.S. Endangered Species Act, and a number of conservation measures are in place to protect it, including habitat restoration. Further research needs to be done into this species’ biology and populations, and landowners need to be provided with incentives to maintain and protect the habitat of this beautiful small bird.

Find out more about the conservation of North American birds at Audubon and The Cornell Lab of Ornithology.

See more images of the golden-cheeked warbler on ARKive.

Liz Shaw, ARKive Text Author

About

RSS feedARKive.org is the place for films, photos and facts about endangered species. Subscribe to our blog today to keep up to date!

Email updates

Sign up to receive a regular email digest of ARKive blog posts.
Preferred frequency:

ARKive twitter

Twitter: ARKive