10,000 Birds

FEBRUARY 8, 2017

If you’re a cuckoo or cowbird hoping to pawn off your parenting duties on another species, new brood parasitism research shows you’ll have better luck if the eggs you deposit in their nest are blue-green instead of brown. contemplating the pretty blue eggs are American Robins are soon to lay is a good coping strategy.).

Massachusetts 100

Massachusetts Eggs Falcons Rights 100

10,000 Birds

NOVEMBER 2, 2021

The “Owls and Albatrosses” chapter, for example, begins with Doug’s personal experiences observing of the nesting strategies of Malleefowl and a Moluccan Megapode, Australasian “chickens who lay their eggs in unusual ways and do not parent. ” (p. And then we go back to the evolution of clutch size.

Science 233

Science Albatross Research Birds 233

10,000 Birds

SEPTEMBER 29, 2013

The first eggs were laid in the first week of July, which is the case each year. The eggs take 28 days to hatch and it is then at least 35 days before the chicks are developed enough to fly and there have been problems with predation as in other years. Pied Oystercatcher sitting on eggs in the nudist area of Cable Beach.

Breeding 159

Breeding Eggs Camels Raised 159

10,000 Birds

NOVEMBER 5, 2015

The highly specialized foraging strategy of flamingos makes them vulnerable to the effect of subtle changes in habitat quality. Egg harvesting to sell as food was intensive then, with thousands taken annually from the breeding colonies in Chile. Egg collection for local consumption still continues at lower scale.

Chile 155

Chile Endangered Species Eggs Argentina 155

10,000 Birds

AUGUST 23, 2015

To the north they are very unlucky with predation before the eggs even hatch out, but to the south the eggs hatch out and then the predation occurs on the chicks. A normally quiet species, that walks a lot more than it flies, takes on a whole new role once it has laid eggs.

Feral Cats 159

Feral Cats Eggs Feral Cats 159

10,000 Birds

NOVEMBER 23, 2014

There is egg predation, chick loss and sometimes possibly just some “bad parenting”! One pair of Pied Oystercatchers laid eggs the first year and did not appear to realise they were supposed to sit on them, but they have since learnt it is an essential part of rearing a chick and they have done so since.

Eggs 165

Eggs Raised Breeding Family 165

10,000 Birds

SEPTEMBER 23, 2013

Mist nets are a popular strategy. One scientists posits that harvesting of horseshoe crabs (their eggs are a preferred Red Knot food source) at a crucial refueling stop on the birds’ migration could be part of the problem. If you need to capture a bird for study or rehabbing, there are a number of tools at your disposal.

Science 167

Science Massachusetts Research Eggs 167

10,000 Birds

AUGUST 2, 2011

Besides the avian attributes of flight, feathers and laying eggs, potoos are quite possibly the most unbird-like birds in the world. Another really bizarre attribute of the potoos is their seemingly casual behavior of laying eggs on bare branches without any attempt to build nests.

Costa Rica 253

Costa Rica Jamaica Eggs Cooking 253

10,000 Birds

OCTOBER 2, 2011

The first eggs are laid during the first week of July each year and if these eggs fail to hatch or the chicks are lost they will lay further eggs within a few weeks. Sadly a lot of eggs are lost to feral cats and chicks are sometimes taken by birds of prey. Nest site with 3 eggs-one white!

2002 167

2002 Feral Cats Eggs 2007 167

10,000 Birds

APRIL 7, 2019

Oriental Pied Hornbills are quite strange in their nesting habits, because the female bird is sealed into a tree trunk during the incubation of the eggs. We hope there is a good outcome for the young and it appears to be a very good strategy for nesting away from predation.

Singapore 113

Singapore Seals Eggs Australia 113

10,000 Birds

MARCH 25, 2020

And the nandu, a South American rhea, has an intriguing chick-survival strategy: a week before hatching, the male (who does the incubating) pushes one egg out of the nest. They fly at night and end up in places you wouldn’t expect them.”. It breaks, attracting flies, which result in maggots that eventually feed the other chicks.

Uruguay 157

Uruguay 2001 Bald Eagle Science 157

10,000 Birds

MAY 16, 2011

Brown-headed Cowbirds evoke strong feelings in many birders, some of whom can’t abide a bird that lays its eggs in other birds’ nests, often to the detriment of the nest owners’ offspring. But I miss the open land with skies never ending And the challenge of laying eggs in a nest with defending.

Eggs 161

Eggs Buffalo Sparrows Humane 161

10,000 Birds

OCTOBER 8, 2015

Both pelicans have a very specialized foraging strategy that depends on abundant fish near the surface. Some pesticides killed pelicans directly, while DDT contamination led to thin-shelled eggs that broke under the weight of the parents. Both are the only Pelican in their non-overlapping breeding grounds.

Pelicans 157

Pelicans North America Peru Fish 157

10,000 Birds

AUGUST 11, 2017

Steal and eat their eggs? But for millions of years up until now you haven’t had an international audience of thousands of highly social mammals with their own particular quirks and evolutionary strategies watching your every move around the clock. Again, I know you’re just doing what you gotta do.

Bald Eagle 101

Bald Eagle Belize Iowa Eggs 101

10,000 Birds

SEPTEMBER 1, 2020

The complexity of the ways in which they use their voices, find food sources, and attract mates belies the often anthropomorphic view of birds as sweet, pure beings with tiny brains (it turns out that these brains are full of neurons).

Research 244

Research Birds Science Costa Rica 244

10,000 Birds

JULY 17, 2012

They are two strikingly different strategies, both of which seem to working well this spring, as everywhere one turns there is new life on the Tundra. I had hoped to have some Semipalmated Plover chick photos for comparison but as of last night they seem to be still at the egg stage. With some serious legs.

Eggs 198

Eggs North America Breeding Europe 198

10,000 Birds

FEBRUARY 29, 2012

Within a group, 1–7 male co-breeders compete for matings with 1–3 joint-nesting females who lay their eggs in the same nest cavity. The result of this cooperative breeding strategy is that fledging success increases with group size and survivorship is also significantly higher for all birds living in these larger groups 1.

Woodpeckers 187

Woodpeckers Breeders Groups North America 187

10,000 Birds

MAY 25, 2023

While having somebody else raise your chicks like an attractive strategy to me, it is not without dangers. Not only does this species directly parasitize other species but also metaphorically, by imitating the sparrowhawks in its appearance and thus deterring potential predators.

Birds 130

Birds Raised Cattle Mammals 130

10,000 Birds

JULY 21, 2022

Studies on improving ostrich egg hatchability. Also, I learned that in the US , ostrich eggs are priced at $40-$75. Each fresh egg weighs 4 pounds and is the equivalent of 24 chicken eggs. . Medicinal and commercial uses of ostrich products in Tanzania. Ostriches originated in Asia. Ostrich industry in Egypt.

Ostriches 147

Ostriches Parrots Birds Eggs 147

10,000 Birds

MARCH 6, 2023

Apparently , they use the presence of their own eggs as a cue for recognizing parasitic eggs – so without the presence of their own eggs as a template they fail to recognize a parasitic egg. Some individuals even rejected their own eggs when they were in the minority.

Eggs 179

Eggs China Birds Mammals 179

10,000 Birds

JUNE 7, 2012

A nest wasn’t found until 1903, which set off a craze for Kirtland’s Warbler skins, nests, and eggs. The good included the development of a new, more open, conservation strategy that embraced communication and education of the community. It was the end of prescribed burns as part of the Kirtland’s Warbler recovery plan.

Michigan 245

Michigan Bahamas Endangered Species Research 245

10,000 Birds

FEBRUARY 20, 2023

In China, wherever there is one real tourist attraction (like the Great Wall), the local strategy seems to be to add some fake attractions – replicas of palaces or tombs, amusement parks, shopping centers – in order to maximize the income from tourists. But the starting point has to be a real attraction, not a fake one.

China 248

China Birds Pythons Eagles 248

10,000 Birds

FEBRUARY 18, 2014

There are two patterns that are fairly extreme that fall into this category: brood parasitism and helper-at-the-nest strategy. In the former, a female lays her fertilized egg in the nest of another species, in the hopes that her offspring will be raised by the unwitting hosts. It turns out that the two strategies may be related.

Breeders 215

Breeders Breeding Birds Groups 215

10,000 Birds

JULY 18, 2012

Starvation and predators make it hard to grow up, and birds have evolved a lot of strategies to give (at least some of) their chicks the best chance in life. One strategy that varies among birds (and other animals) is the number of offspring. Seabirds are one group of birds that go for the latter strategy.

Eggs 167

Eggs Puffins Breeding Raised 167

10,000 Birds

JULY 20, 2012

But the honeyguides, indigobirds, and a single species of duck all do the classic cuckoo strategy (obligate interspecific brood parasitism) as well. This behavior is most common in colony nesters, since popping next door to drop off an egg is a lot easier than hunting down another nest through acres of forest or grassland. But come on.

Eggs 156

Eggs Neglecting Adoptable Hunting 156

10,000 Birds

APRIL 15, 2014

The local Bald Eagles are getting busy, I suspect there is an egg in the nest. The Izu scincid lizards (Plestiodon latiscutatus) that inhabit the four Japanese Izu Islands with only bird predators are drab brown, mature later, lay small clutches of large eggs, and hatch large neonates. All I see are their buts.

Birds 188

Birds Bald Eagle Zoos Philippines 188

10,000 Birds

MAY 15, 2023

Fortunately, in science, there is often a way to turn a defeat into a victory – in this case via the author just coming up with a new hypothesis, “if black eagles use the frequency or intensity of mobbing as a clue to locate nests, a lack of seasonal difference in mobbing behavior by drongos may be an evolutionary adaptive strategy.”

China 199

China 2017 Birds Indonesia 199

10,000 Birds

NOVEMBER 3, 2020

For New Zealand, he describes each of the Subantarctic Islands and mainland islands and beaches where its nine Penguin species are found, including endemic species like Snares, Erect-crested, and Royal, and suggests strategies for seeing them all.

Penguins 279

Penguins Georgia New Zealand Albatross 279

10,000 Birds

JULY 25, 2022

Gisela Kaplan has written a book about the species, and how they seem unperturbed by humans: “It’s one of their most successful defense strategies. When these birds breed, this can lead to highly cringeworthy announcements, for example from Adelaide Zoo : “We have egg-citing news!

Birds 248

Birds Australia Ducks Mountain Goats 248

10,000 Birds

JUNE 27, 2018

That was probably a great strategy for rapid reproduction … live very fast and die very young. That strategy determined the fact that all mammals would have the risk of somatic mutations that accumulate over time affecting their eggs.

Monkeys 149

Monkeys Gorillas Whales Whaling 149

10,000 Birds

JANUARY 19, 2012

Both Elk and songbirds have the same basic method of inseminating eggs, which is one of the steps in reproduction (but not by any means the first!), Songbirds grow the offspring internally for only a very short while, and then pop out an egg, which is then cared for over a significant period of time until it hatches.

Mammals 170

Mammals Eggs Abandon Abandoning 170

10,000 Birds

NOVEMBER 1, 2016

Tall grass, grass in burnt areas, leaves stems, small mammals, large mammals, invertebrates, birds, bird eggs, even hyena feces (that’s the Leopard Tortoise). Such a great variety of food! Species that belong to the famous “Big Five” get special badges.

Rhinos 249

Rhinos Mammals Animal White Rhinos 249

10,000 Birds

DECEMBER 7, 2021

This may have been partly a leftover from the Victorian fascination with egg collecting (the infamous passion known as oology), but probably more from people’s burgeoning interest in the nests and eggs found in their gardens and fields, gateway artifacts to a newer hobby called birdwatching. The Harrison guides are out of print.

Eggs 250

Eggs Birds United States Sparrows 250

10,000 Birds

APRIL 24, 2012

Within the bird world, so many different strategies and methods of mating and reproduction have evolved, it simply boggles the mind. There is some debate on the reproductive/genetic benefits of this, although a common view is that individuals don’t want all their eggs in one genetic basket, so to speak (pun intended, zing!).

Albatross 208

Albatross Birds Lifestyle Raised 208

10,000 Birds

JUNE 19, 2012

The quills of the “Saqu Ettair” Secretarybirds feed on small lizards, insects, rodents, birds eggs and, of course, snakes. Another strategy regularly employed by these weird raptors is that they will soar great distances, utilizing thermals in search of bush-fires.

Botswana 238

Botswana Eagles Porcupines Hunting 238

10,000 Birds

APRIL 27, 2012

One of the more interesting aspects (in my opinion) of breeding in birds is their mating strategy. There are four main mating strategies in birds: 1) monogamy, 2) polygyny, 3) polyandry, and 4) polygynandry. The final, rarest mating strategy, found in less than 0.1% of all bird species, is polyandry.

2002 173

2002 North America 2000 2009 173

10,000 Birds

JANUARY 29, 2024

” Blue-bearded Bee-eaters seem to have a pretty clever hunting strategy. The authors of the paper sound a bit helpless, stating that “At the time of discovery, both birds [two bee-eaters] were still alive, but it was not possible to free them from the net because the bees began to attack the ringer.”

Squirrels 143

Squirrels Birds China Bears 143