10,000 Birds

AUGUST 31, 2011

In California, coveys break up and pairs begin forming in February or March, followed by nest building and egg laying in May or June. She will usually lay 12 to 17 eggs, averaging five per week 1 , before beginning incubation. Occasionally, larger clutches occur due to egg dumping by other females. References: 1 Baicich, Paul J.

California 263

California Rattlesnake Gophers Eggs 263

10,000 Birds

JUNE 18, 2014

The featured image above shows a female incubating eggs from my first resident breeding pair back in 2007. The four to six eggs are white and unmarked. It’s not as clear as the photo of the eggs above but I did not want to disturb the female as she was circling the nest to resume her duties.

Eggs 200

Eggs North America 2007 Woodpeckers 200

10,000 Birds

JULY 15, 2012

They owe their awful name to the fact that the former holarctic ”Wren” or “Winter Wren” was recently split into several New World and one Old World form, producing the need to add a geographic reference to the new forms’ respective names. But certainly, very certainly, the Baby Wren won’t.

Germany 247

Germany Europe Eggs Birds 247

10,000 Birds

JULY 4, 2012

The female alone incubates the usual 4 to 6 eggs for about two weeks beginning the day the last egg is laid. Here you can see two chicks have already hatched, one egg is split open with the chick ready to emerge and one egg has a hole in it pipped by the chick from the inside. i Kamakawiwo?ole’s

Washington 240

Washington Eggs Israel California 240

10,000 Birds

JULY 16, 2013

Formerly known as Jackass Penguins , a reference to their strange braying calls, African Penguins have become the unofficial mascots of marine conservation in the region. On the mainland they face predation from domestic cats, dogs, genets, mongoose and Cape Gulls which steal their chicks and eggs.

Penguins 250

Penguins South Africa Sharks Leopards 250

10,000 Birds

DECEMBER 7, 2011

The female chooses the nest site, builds the nest, lays around 10 eggs over a two week period and incubates them for about a month. References: 1 Birds of North America Online a. entrance hole. The male seldom sticks around once the female begins incubation. The young are born precocial and leave the nest within 48 hours.

Jordan 215

Jordan North America Abandoning Abandonment 215

10,000 Birds

DECEMBER 12, 2019

Want to see a bird shaped like an egg? However, there are only two lyrical references to birds in the National song catalog, and they are both somewhat generic (“Out of my league, I have birds in my sleeves” in”Squalor Victoria” and “Bird that flys out of order underneath the sky” in “29 years” – the latter is not a bad line).

Malaysia 246

Malaysia Birds Asia Morals 246

10,000 Birds

SEPTEMBER 6, 2022

They may be about bird eggs ( The Most Perfect Thing: The Inside (and Outside) of a Bird’s Egg , 2016), or a 17th-century ornithologist ( Virtuoso by Nature: The Scientific Worlds of Francis Willughby, 2016), or How Bullfinches learn songs from humans ( The Wisdom of Birds: An Illustrated History of Ornithology.

Dissection 264

Dissection Birds Europe Eggs 264

10,000 Birds

JUNE 22, 2011

Here’s a photo of a House Finch nest before the eggs hatch and the hatchlings start producing fecal sacs. v=fHSgyxRQXvg References: 1 Birds of North America Online _ Poop Week is a week of themed posts on 10,000 Birds that cover the intersection of poop and birding, a fertile precinct if there ever was one.

Bald Eagle 250

Bald Eagle Chickens North America Birds 250

10,000 Birds

OCTOBER 10, 2012

Today, the species has all but disappeared east of the Mississippi River and has declined in western parts of its range, most likely caused by the expansion of the House Wren which destroys and removes their eggs from nest sites 1. References: 1 Birds of North America Online. This is what I am used to seeing.

Mississippi 186

Mississippi North America Eggs America 186

10,000 Birds

MARCH 11, 2024

This laughingthrush is a cooperative breeder – nestlings are fed by all members of a group, often 6-12 (not just 2 as in Wham!): “A female may share a nest with another, and 3 or more adults may take turns incubating the eggs and feeding the chicks.” ” ( source ). The male is, indeed, rather a handsome Thrush.”

Burma 246

Burma India Thailand Indonesia 246

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. References: 1 Birds of North America Online a. Most Acorn Woodpeckers are cooperative breeders and live in family groups of up to a dozen or more individuals.

Woodpeckers 233

Woodpeckers Breeders North America Groups 233

10,000 Birds

OCTOBER 4, 2021

Hints of potential warming in the HBW species description: “Date of first egg-laying on Honshu now 7 days earlier than it was 25 years ago” There are also quite a few Cuckoos. It certainly does not refer to the status of Nanhui. At least, I managed to get a The National reference into the blog eventually.

LACS 264

LACS Birds France Japan 264

10,000 Birds

FEBRUARY 25, 2013

Occasionally the Tristan Thrush Nesocichla eremita will prey upon chicks from the two-egg nest of the Inaccessible Island Rail but this not enough in any way to threaten the species. Its eggs are not known, it does not migrate, and it feeds, I understand, on insects and worms.

Science 240

Science Transported Shelters South Africa 240

10,000 Birds

JANUARY 3, 2023

References to plate numbers (in the Plates section) and photograph numbers (in a Photo Gallery) are also placed prominently next to species name. There is also ample reference material in the front and back of the guide. Harrison, and Nests, Eggs, and Nestlings of North American Birds, 2nd ed. Baicich and Colin J.

Wildlife Rehabilitation 290

Wildlife Rehabilitation Family Birds Collecting 290

10,000 Birds

OCTOBER 21, 2015

Isla Rasa was declared a sanctuary in 1964, and egg-collecting and disturbance during the breeding season are discouraged. References: 1 Birds of North America Online , 2 BirdLife International. Heermann’s Gulls form large breeding colonies on arid islands in the Gulf of California, Mexico, from March through July. v=FUBX_tlHySc.

San Francisco 182

San Francisco North America Seals Sanctuary 182

10,000 Birds

SEPTEMBER 24, 2014

” Since there is no sexual dimorphism between the male and female Bank Swallow you really can’t tell them apart until they begin incubating eggs, at which point the female will have a brood patch and the male will not. References: 1 Birds of North America Online.

North America 243

North America 2014 California America 243

10,000 Birds

JUNE 16, 2011

Neornithes together with some now extinct close relatives to the modern birds is referred to as Avialae. One of the most interesting differences between birds and dinosaurs has to do with their eggs. In words, modern birds are called Neornithes. A larger group that includes Archaeopteryx, is called Aves.

Birds 271

Birds Marsupials Primates Whaling 271

10,000 Birds

JANUARY 7, 2012

Using the ubiquitous Great Egret as a reference, the Goliath Heron is half a meter taller (from bill-tip to toe) and four times as heavy. The clutch of a Goliath Heron would usually consist of 3-4 pale blue eggs that would hatch after about 4 weeks. For this reason it needs huge wings, outspanning the Great Egret by a meter.

Hunting 242

Hunting Battery Raised Adoptable 242

10,000 Birds

NOVEMBER 27, 2022

I understand you may well not be able to see the nest clearly in the photo above and here is the same photo with it circled for reference. We could see there was a marker we could use to go by the nest from a distance and establish if they were cooling eggs or chicks. Little Tern nest.

Breeding 162

Breeding Asia Taiwan Australia 162

10,000 Birds

OCTOBER 7, 2015

They normally lay 3 to 4 eggs per clutch. References: Audubon California 1. Here is a photo of their nest which is built by the male and female, of material brought from under water, the surface, or emergent vegetation, usually near the nest. What a great bird! www.youtube.com/watch?v=ZbRrxw-H6xA. v=ZbRrxw-H6xA.

California 145

California North America Eggs America 145

10,000 Birds

JANUARY 28, 2015

During the 1980s, the Pacific Coast Population swans became the source of eggs for several restoration programs in Minnesota, Michigan, Ohio, Wisconsin, and Iowa 2. This video was taken at the Chico Oxidation Ponds where these swans were relaxing with hundreds, if not thousands of ducks. www.youtube.com/watch?v=kq1bx7Ic2FY. v=kq1bx7Ic2FY.

North America 199

North America Iowa Wisconsin Michigan 199

10,000 Birds

AUGUST 29, 2014

To civilians who may have been puzzled by the wildlife crowd’s tossed-off references to peefas, modos or mice cubes, here is a beginner’s guide to Rehabberspeak. Maureen Eiger categorizes any unidentifiable featherless nestlings as “ Tufted Puffins ;” to Letitia Labbie, they’re “Eggs With Legs.”.

Wildlife Rehabilitation 260

Wildlife Rehabilitation Wildlife Mice Vet 260

10,000 Birds

NOVEMBER 3, 2020

When we come to Gentoo Penguin again in the South Georgia chapter, for example, we’re referred back to its first appearance in Antarctica, utilizing the outline numbers.). The full-length species accounts are not repeated. It’s an unorthodox arrangement that can be confusing when you first open the book.

Penguins 279

Penguins Georgia Albatross New Zealand 279

10,000 Birds

AUGUST 10, 2016

Each nesting pair will have 4-8 eggs, and there is some reference to location being a factor on that quantity. Mearnsi are both considered critically endangered. The Loggerheads that I commonly see here in this area are the subspecies L.i. The Loggerhead Shrike is 9 inches over all, and the largest of the shrike family is 20 inches.

Butcher 174

Butcher North America Birds Mexico 174

10,000 Birds

AUGUST 4, 2015

Readers are referred to the text itself for citations of historical periodicals such Bird-Lore, the magazine that preceded Audubon magazine. He’s also worked with the National Wildlife Refuge System, co-led birding tours to Alaska, and co-authored A Guide to the Nests, Eggs, and Nestlings of North American Birds (1997).

America 250

America Squirrels Industry Birds 250

10,000 Birds

MARCH 22, 2018

Pairs average 59 successful copulations per clutch, starting 14 days before, and peaking a few days before, the start of egg-laying 1. Pairs copulate most often in early morning, at the same time as egg-laying 1. References: 1 Birds of North America Online.

Eggs 165

Eggs North America Fish America 165

10,000 Birds

JULY 1, 2015

When I first approached the nest tree I saw an adult squirrel climbing the snag near the sapsucker entrance and, knowing that squirrels will eat bird eggs and nestlings, I was quite concerned. References: 1 Birds of North America Online. Click on photos for full sized images. It should be here later today.

Squirrels 157

Squirrels Woodpeckers North America Eggs 157

10,000 Birds

MAY 6, 2015

Every spring I look forward to monitoring my bluebird trails when I not only get to watch Western Bluebirds develop from eggs to fledglings, but other cavity nesters as well. References: 1 Eastern Bluebird History. I watched three of the five nestlings fledge but had to leave before the last two left the nest box. v=qxsnESZ2Z6U.

Tenant 174

Tenant Farming Illinois North America 174

10,000 Birds

JULY 13, 2016

In doing some research on the Motmot family, I found several references to the fact that the long decorative tail is actually quite fragile. They lay 3-4 eggs, inside a nest that is located in the back of a tunnel, they dig in a bank. The Motmot never flew away, and as soon as the dog was out of sight, the tail stopped wagging.

Mexico 154

Mexico Reptiles Dogs Eggs 154

10,000 Birds

AUGUST 2, 2022

One of Whittaker’s first experiments was to place other birds’ preen oil on the nests and eggs of Dark-eyed Juncos. There is no bibliography, a References section lists articles by chapter, in the order in which they are discussed in the text. 241) that contribute to a bird’s odor.

Science 264

Science Research Turkey 2006 264

10,000 Birds

JUNE 19, 2013

Plus the fact that they only lay one egg per season which is incubated for about four weeks and the chicks don’t fledge for another fifty days gives you some notion as to why these birds are a Species of Special Concern. Pairs will also reuse the same nest in consecutive years, adding only a small amount of material to the nest.

California 240

California Costa Rica North America Niger 240

10,000 Birds

SEPTEMBER 15, 2011

They have special adaptations to stay warm and to keep their eggs and chicks warm. This separation of different traits into individual and separate histories, each with its own selective environment, is now known as “mosaic evolution&# in reference to a mosaic showing a coherent picture, but made of many individual separate tiles.

Penguins 251

Penguins Seals Peru Sharks 251

10,000 Birds

JULY 3, 2013

White-headed Woodpeckers usually lay 4 to 5 eggs in a clutch and we’ve seen at least three different nestlings here now. References: 1 Birds of North America Online. Note that the adult always turns its head to the side to accommodate the nestling during the transfer of mainly larvae and adult insects.

Woodpeckers 154

Woodpeckers North America America Eggs 154

10,000 Birds

MAY 5, 2016

A letter requesting information on the permit issued to remove the nest got this response from the city, “In reference to your request for documentation for the removal of an active Osprey nest from the light pole at the soccer field, please be advised that none exist.

Transported 124

Transported Eggs Killing 2009 124

10,000 Birds

JUNE 20, 2012

It is illegal for any person to take, possess, transport, sell, or purchase them or their parts, such as feathers, nests, or eggs, without a permit. v=gJma0Szy8R8 References: 1 University of California Agriculture and Natural Resources, Statewide Integrated Pest Management Program, June 2005. I wonder what that’s all about?

San Diego 165

San Diego illegal California South America 165

10,000 Birds

AUGUST 9, 2018

Birds are able to fly away, but their nests and eggs can be destroyed. Vicki states that fire benefits several bird species, like the Black-backed Woodpecker which feeds off the bark and wood-boring beetles that lay eggs in the charred trees. References: 1 Proceedings of the National Academy of Sciences.

Wildlife 140

Wildlife Sacramento Shelters Connecticut 140