10,000 Birds

APRIL 25, 2012

Most of the Osprey breeding in North America are migratory, only Florida, the Caribbean and Baja California host non-migratory breeders 1. Osprey pairs usually form at the nest site where females are fed almost exclusively by their mates prior to egg laying behavior 1. This pair copulated several times while I was observing.

California 240

California North America Sacramento Breeders 240

10,000 Birds

SEPTEMBER 25, 2013

While the native apple snail continued declining, another species of apple snail native to South America began to appear in canals and ponds in South Florida. Native snails lay 20-50 eggs at a time during the spring. Exotic snails lay 300-500 eggs at a time, lay eggs throughout the year, and are more resistant to environmental changes.

Florida 246

Florida South America Bolivia Eggs 246

10,000 Birds

JUNE 2, 2015

And of eggs and nests and birds on nests. Into the Nest , as the title says, is about the courting, mating, egg-laying, nesting, and parenting behavior of “familiar birds”. Cedar Waxwings exchange berries, carry nesting material, eggs. Egg biology, from Part I. Oops, the curmudgeon in me slipped.) Peregrine Falcon nests.

Eggs 263

Eggs Family 2006 New York 263

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 256

California Gophers Rattlesnake Eggs 256

10,000 Birds

AUGUST 20, 2013

And, in South America, there is at least one species that is being heavily preyed on by North American Minks which are not supposed to be in South America. Their natural range is in a smallish region of southern South America. Which brings us to the Hooded Grebe Podiceps gallardoi.

2010 231

2010 South America 2011 Argentina 231

10,000 Birds

MAY 26, 2013

Corey’s Best Bird of the Weekend was a surprise American Golden-Plover at Big Egg Marsh in Queens, a very good bird for the east coast in spring, as they tend to migrate north through the center of North America. How about you? What was your best bird of the weekend?

2013 208

2013 North America Eggs Birds 208

10,000 Birds

SEPTEMBER 25, 2014

Male Phalaropes, Jacanas, Tinamous, and Rheas build nests, incubate the eggs and take care of the chicks. Perhaps the most complicated and bizarre mating system is that of the Rheas of South America. They live in flocks in the open country shrubland of Southern South America. Some of the eggs will be lost to the elements.

South America 159

South America Eggs Raised America 159

10,000 Birds

SEPTEMBER 9, 2015

The Mourning Dove ( Zenaida macroura) is among the most abundant and widespread terrestrial birds endemic to North and Middle America. The nickel was placed in the nest for the photo to show me the size of the egg for identification purposes, then removed. References: 1 Birds of North America Online , 2 Droege, S.

Hunters 200

Hunters Hunting North America Game 200

10,000 Birds

NOVEMBER 1, 2011

I think most of us in North America have come to the somewhat disappointing conclusion that fall migration is pretty much finished for the year. Foraging in the willows with the Palm Warblers was true-blue neotropic migrant still slumming it in North America, a Blackpoll Warbler. You’re done. Look at those bright legs!

North America 233

North America North Carolina South America Tennessee 233

10,000 Birds

JUNE 21, 2011

If you were an Eskimo Curlew (and boy, do we wish you were) somewhere in Newfoundland ready to head south across the sea to South America, eating an extra bit of food before take-off will certainly be easier than going down for a quick drink of fresh water somewhere over the Atlantic. Or picture yourself as a bird fetus within an egg.

Mammals 263

Mammals Birds Eggs Fish 263

10,000 Birds

AUGUST 14, 2013

They packed up in June of 2013 and headed south from San Diego with the southern tip of South America as their destination. The non-breeding distribution is virtually unknown, although they are suspected to winter in northern South America (Howell and Web 1995). Very little is known about this enigmatic species.

South America 218

South America San Diego Mexico America 218

10,000 Birds

APRIL 10, 2013

All four major flyways in North America — the aerial migration routes traveled by billions of birds each year — converge in one spot in Canada’s boreal forest, the Peace-Athabasca Delta in northeastern Alberta. About three billion birds fly north to the Boreal Forest each spring to build nests and lay eggs. depend on the Boreal Forest.

Obama 263

Obama 2008 United States North America 263

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. Why are all the real tanagers in tropical America?

Science 245

Science Albatross Owls Research 245

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 170

Eggs North America 2007 Woodpeckers 170

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

APRIL 5, 2012

However, with upcoming Easter and Passover festivities and America’s all-important Spring Break, now is a good time to focus on the peregrinations of people. As is my wont, we’ll be celebrating a secular Easter replete with colored eggs, chocolate bunnies, and a fun family hike. Where are you going this weekend?

2012 169

2012 Albatross New York Eggs 169

10,000 Birds

JANUARY 28, 2015

Although it was formerly abundant and geographically widespread, Trumpeter Swan numbers and distribution were greatly reduced during the early fur trade and European settlement of North America (1600’s to 1800’s), when it was prized for its skins and primary feathers 1. www.youtube.com/watch?v=kq1bx7Ic2FY. v=kq1bx7Ic2FY.

North America 179

North America Iowa Wisconsin Michigan 179

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 204

Washington Eggs Israel California 204

10,000 Birds

SEPTEMBER 24, 2014

The Bank Swallow ( Riparia riparia ) is North America’s smallest swallow. Historically, all Bank Swallow colonies in North America were found in natural sites such as banks along rivers, streams, lakes, and coasts; today, many colonies are in human-made sites like sand and gravel pits and road cuts.

North America 205

North America 2014 California America 205

10,000 Birds

JULY 17, 2012

Horned Larks breed widely over North America, including up here in the High Arctic. 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. Let’s start with the altricial birds, shall we? Here are five in a nest, close to fledging.

Eggs 220

Eggs North America Breeding Europe 220

10,000 Birds

JULY 21, 2012

Photo Essay: Green-rumped Parrotlets from Egg to Adult Wednesday, 18 July An unusual auk baby. Baby Mute Swans – “immutabilis morph” Cavity Nesting Birds of North America and Their Babies!

Costa Rica 177

Costa Rica Albatross North America Birds 177

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 174

Mississippi North America Eggs America 174

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. Photo from Wikipedia Commons taken by Terry Gray.

California 238

California Costa Rica North America Niger 238

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 177

Jordan North America Abandon Abandonment 177

10,000 Birds

JANUARY 2, 2024

The scope is worldwide; of the 24 birds depicted, five are from the Americas; five from Eurasia; three from New Zealand; two from Australasia; three from Africa; one from Africa and Asia; one from Antarctica; two worldwide, and two from Asia, introduced worldwide. of Chicago Press, 2014).

Barn Owls 230

Barn Owls Chicago Penguins New Zealand 230

10,000 Birds

JULY 31, 2014

Young Least Terns , some still begging for food, begin to appear on Florida beaches and will soon continue their flight south eastern South America. By early May most terns have laid eggs. There were a lot more terns incubating eggs than what we had estimated. Nesting on a rooftop is by no means safer than doing so on the beach.

Florida 185

Florida Raccoons South America Eggs 185

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. If you want to learn a lot about bird species, I find “Birds of North America Online” the best resource on the net. References: 1 Birds of North America Online , 2 BirdLife International.

San Francisco 162

San Francisco North America Seals Sanctuary 162

10,000 Birds

MARCH 7, 2012

Green Iguanas range from southern Mexico and the Caribbean islands to South America and are relatively common. The female of the species lays ten to thirty eggs in a burrow she digs about 65 days after mating.

New York 172

New York Reptiles Eggs South America 172

10,000 Birds

NOVEMBER 5, 2015

The Andean Flamingo ( Phoenicopterus andinus ) is one of the three flamingos occurring in the high Andes of South America. 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 156

Chile Endangered Species Eggs Argentina 156

10,000 Birds

JANUARY 22, 2012

Typically there are four eggs in a brood especially on good year. Once the eggs hatch the family begins the long walk down to the shoreline. Some of these birds, breeding up here at 73 degrees north will winter at the tip of South America, Tierra Del Fuego, 54 degrees south or so. This was a later nest. “Are we there yet?

South America 174

South America Eggs Family Raised 174

10,000 Birds

DECEMBER 18, 2014

One of the two sub-species of Red Knot occurring in North America, the Rufa subspecies breeds in the Canadian Artic Region and migrates along the east or Atlantic coast of the United States. migration corridors from Argentina in the Southern tip of South America to Canada.

Endangered Species 160

Endangered Species Protection Delaware Species 160

10,000 Birds

JULY 23, 2014

In North America and the Caribbean, they are found mostly in suburban, urban, and agricultural areas where grain, roost, and nest sites are available. They usually lay two eggs per clutch and most often, successive clutches will be laid while adults are still attending fledglings! This next map is data from 2007 through 2008.

Breeders 196

Breeders 2002 North America Bahamas 196

10,000 Birds

JULY 28, 2013

This pair first appeared four years ago, and are amongst the most northerly known breeding Pacific Loons in North America. I could see from the road there was an egg in the nest and when a Glaucous Gull began circling the nest I expected one of the pair to lift from the lake and return to defend the nest. A different Glaucous Gull.

Abandon 180

Abandon Abandonment Abandoning Eggs 180

10,000 Birds

APRIL 30, 2013

In North America, at least in the eastern part of it, we celebrate the return of the Baltimore Oriole to parks and farms this time of year. The two dozen species are, nearly to an individual, long bodied and bicolored. Troupials raise their own chicks, generally 3 to 4 per clutch, they just steal the nest in which they raise them.

Baltimore 203

Baltimore Broker North America Raised 203

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 196

Woodpeckers Breeders North America Groups 196

10,000 Birds

OCTOBER 7, 2015

They nest on large inland lakes in western North America and migrate to the Pacific coast in winter, however they maintain local populations year-round in California. They normally lay 3 to 4 eggs per clutch. Click on photos for full sized images.

California 145

California North America Eggs America 145

10,000 Birds

OCTOBER 8, 2015

The Brown Pelican occurs in both the Pacific and Atlantic coasts of North America and northern South America. They nearly disappeared from North America between the late 1950s and early 1970s because of pesticides entering the food chain. Brown Pelicans in non-breeding plumage.

Pelicans 157

Pelicans North America Peru Chile 157