10,000 Birds

APRIL 8, 2015

The Calliope Hummingbird is the smallest North American breeding bird 1. The males arrive on breeding grounds before the females and, according to their range map, they probably breed here in Shasta County. References: 1 Birds of North America Online. Click on photos for full sized images. He’s moving closer.

North America 251

North America 2010 Breeding America 251

10,000 Birds

MAY 17, 2016

I want to alert you to a recent study (from April) that looks at the plight of bird populations under conditions of climate change in Europe and North America. Data were collected from the North American Breeding Bird Survey and the Pan-European Common Birds Monitoring Scheme. Why are Europe and North America different?

North America 144

North America Europe America United States 144

10,000 Birds

JANUARY 10, 2014

Let’s say you’re a bird wrapping up your breeding season in the north of Scotland—where do your thoughts turn when winter beckons? The researchers theorize that these birds might not be strays from the Scandinavian Phalarope population, but instead perhaps originally from North America.

Iceland 226

Iceland Stray Ecuador South America 226

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

FEBRUARY 7, 2012

Very few birds – or animals for that matter – would plunge head-first into the churning cauldrons of some of South America’s most treacherous rivers. Red-ruffed Fruitcrows are a highly sought-after species and are tough to find elsewhere in South America. Torrent Ducks are the thrill-seekers of the avian world.

Ducks 267

Ducks Colombia South America Squirrels 267

10,000 Birds

APRIL 6, 2021

His second book on migration is a tale of many birds and many research studies all connected by the theme of migration and by his thoughtful narrative voice. Even if you have read about these research projects, Weidensaul’s accounts offer fresh angles and updated information. is through the personal and the specific.

Cyprus 264

Cyprus Slaughter Slaughtered Research 264

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. Even though the female lays only two eggs per nest attempt, they enjoy a protracted breeding season in which multiple nesting attempts can occur every 30 days, and in Southern locations, nearly year round.

Hunters 200

Hunters Hunting North America Game 200

10,000 Birds

JULY 17, 2012

You don’t really know a bird until you’ve studied it on its breeding grounds. Getting intimate with a species over the course of the breeding cycle is one of the more rewarding aspects of birding, and field research too. Color markings on the legs and head are to identify individuals for research purposes).

Eggs 269

Eggs Venezuela Porcupines 2008 269

10,000 Birds

OCTOBER 21, 2015

Heermann’s Gulls form large breeding colonies on arid islands in the Gulf of California, Mexico, from March through July. The largest colony exists on Isla Raza, where an estimated 90–95% of the total world population breeds 1. This photo by Basar from Wikipedia Commons shows the adult in breeding plumage. www.youtube.com/watch?v=FUBX_tlHySc.

San Francisco 162

San Francisco North America Seals Sanctuary 162

10,000 Birds

AUGUST 1, 2023

2012), and (4) Waterfowl of Eastern North America, 2nd ed. Every species account (well, most every account) includes information on habitat and talk briefly about range and distribution (there are no range maps in this guide); it is usually noted if the species breeds in Ontario, and often noted if it is migratory or residential year-round.

North America 245

North America Birds Owls Canada 245

10,000 Birds

NOVEMBER 3, 2020

The goal of Around the World For Penguins is simple: Describe the 18 species of penguin and their breeding grounds “from the perspective of a traveller.” Plantema gives highly detailed information about the weather, terrain, ownership of and access to the islands and coasts where penguins breed. Press, 2011).

Penguins 279

Penguins Georgia Albatross New Zealand 279

10,000 Birds

SEPTEMBER 22, 2014

When Purple Finches leave Ontario in October and November, they return in mid-April to mid-May to breed. Red Crossbills comprise at least 10 “call types” in North America. White-winged Crossbills move east and west like a pendulum across North America searching for bumper cone crops. HOARY REDPOLL.

2014 263

2014 2015 Alaska New Hampshire 263

10,000 Birds

AUGUST 31, 2011

All New World Quail are highly gregarious, typically found in coveys or flocks except during breeding season. These could be the beginning of the formation of coveys, post breeding season flocks that form when the chicks become independent at about three months old. The birds scatter, sometimes in different directions.

California 256

California Rattlesnake Gophers Eggs 256

10,000 Birds

JUNE 28, 2015

Known as the Great Egret in the Americas, it was commonly referred to as the Great White Heron in the Old World. Recent research however has shown it to be more closely linked to Ardea -herons. The first level is the most harmless of them all since it only pertains to birders engaged in international conversations: its common name.

Asia 207

Asia Europe Germany Breeding 207

10,000 Birds

MAY 10, 2015

Birders in the Americas may not be aware of it, but from the higher ground of a European perspective the American “warblers” are intensely overrated. Then there is the fact that indicus sparrows tend to avoid human habitations while domesticus doesn’t, leading to sympatric breeding with a disputed amount of hybridisation.

Sparrows 252

Sparrows Italy Asia Kyrgyzstan 252

10,000 Birds

MARCH 2, 2015

Many species that are currently common may stay that way, and some species will likely increase…and hopefully species besides House Sparrows , European Starlings , Rock Pigeons and Eurasian Collared-Doves , which those in North America know as the four avian horsemen of the apocalypse. Whats in it for birds?

North America 254

North America San Francisco Suffering California 254

10,000 Birds

MAY 11, 2019

With birds bedecked in their breeding best and filling the air with song, this is migration at its loveliest. Threatened by loss of habitat both on breeding as well as wintering grounds, a few species have even become endangered or at least on a perilous track towards that worrisome designation.

Costa Rica 203

Costa Rica Species Belize New Jersey 203

10,000 Birds

MARCH 17, 2013

Proposal 2013-A-2 would split the “Guatemalan Pygmy-Owl” ( Glaucidium cobanense ) of southern Mexico and northern Central America from the widespread Northern Pygmy-Owl ( G. The proposal author (a Sage Sparrow researcher) argues that multiple factors indicate the birds deserve full species status. Sandwich Tern split.

2013 222

2013 Stray Sparrows Owls 222

10,000 Birds

JUNE 7, 2012

A lovely looking and distinctive sounding bird (so they say, I sadly have not seen one…yet), the Kirtland’s Warbler can only be found during its breeding season in Jack Pine forests 5 to 20 years old in the northern Lower Peninsula of Michigan. Previously, even researchers had problems getting access to nesting Kirtland’s Warblers.

Michigan 257

Michigan Bahamas Endangered Species Research 257

10,000 Birds

JUNE 27, 2011

Smith is the Staff Scientist Emeritus with the Smithsonian’s Tropical Research Centre in Panama. The work was widely cited, followed up with an article in Scientific American and the research appeared (and I may be wrong still appears) in textbooks. Do the Common Ringed type migrate through Europe and the Semipalmated head south?

Iceland 196

Iceland Europe Panama North America 196

10,000 Birds

JULY 27, 2013

It was on the island of Trinidad, at the Aripo Agricultural Research Station, where all of these photographs were taken. Trinidad is the northern limit of the range of the Red-breasted Blackbird , though it is unclear if the occasional birds that show up in Tobago are wanderers from Trinidad or northern South America or are breeding there.

Blackbirds 169

Blackbirds Trinidad Costa Rica Nicaragua 169

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. The other sub-species, Calidris canutus roselaari , migrates along the Pacific Coast and breeds in Alaska and the Wrangel Island in Russia.

Endangered Species 160

Endangered Species Protection Delaware Species 160

10,000 Birds

MARCH 15, 2011

Over the next few days, the Alpine Accentors ( Prunella collaris ) will arrive on their high-Alpine breeding grounds – it is time to start singing, despite that the treeless Alpine landscape is still under metres of snow. all Alpine Accetor photos digiscoped (c) Dale Forbes. all Alpine Accetor photos digiscoped (c) Dale Forbes.

2011 234

2011 Breeders Deer Breeding 234

10,000 Birds

NOVEMBER 20, 2012

The chance that this was a real Turkey are not great, and the chance that Columbus actually brought breeding stock from Honduras to Spain is not great, so maybe, maybe not. The history of the Wild Turkey, the reduction to its original range, and its re-expansion and re-introduction, remains today unclear and in need of further research.

Turkey 238

Turkey Columbus Spain Fowl 238

10,000 Birds

MARCH 9, 2012

Holt founded the Owl Research Institute , an organization that focuses on long-term studies of a variety of species of owls, as well as their prey species and environments. The ORI maintains a research station in the Mission Valley of Western Montana, neighboring the Ninepipes National Wildlife Refuge.

Montana 162

Montana Owls Denver Barn Owls 162

10,000 Birds

FEBRUARY 17, 2015

If this was America, we might not be concerned because starlings are an invasive species, at least in North America. Researchers are wondering if the die-off might spread to other birds or even fish. This is not something I needed to tell you but there is some new research. Since then the deaths haven’t stopped.

Science 154

Science Iraq Oregon Charlotte 154

10,000 Birds

AUGUST 20, 2015

This map shows the distribution of the World’s bird species, based on overlying the breeding and wintering ranges of all known species. It makes me think what is the meaning of life, the universe and everything? Why am I here? And where all those birds are? Map by BirdLife International.

Sri Lanka 257

Sri Lanka Botswana Africa Serbia 257

10,000 Birds

JANUARY 26, 2014

The Yellow-rumped Warbler ( Setophaga coronata ) complex is one of the most abundant and widespread representatives of the New World warbler family in North America, present in many parts of the United States even through the winter months, when the birds feed on small fruits and other foods, including sap.

United States 265

United States 2011 Guatemala North America 265

10,000 Birds

NOVEMBER 5, 2013

A little bit of research when I got home unraveled the ways of publishers here and in Great Britain. The accounts aim for specificity and authority; dates and locations of rarity sightings are given, and research articles on nesting and behavior are cited. Even during the breeding season the birds appear to be quite unwary of humans.

Trinidad 234

Trinidad South America Birds 2011 234

10,000 Birds

SEPTEMBER 8, 2023

The first is that the illustrations by Dale Dyer are based, and largely seem to be the same, as the illustrations for his previous guide Birds of Central America: Belize, Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica, and Panama (co-authored with Andrew Vallely, PUP, 2018). Doing this work takes time! I love the writing here.

Costa Rica 245

Costa Rica Belize El Salvador Birds 245

10,000 Birds

MAY 2, 2023

Flight Paths traces the history of migratory research in nine chapters, starting with the earliest attempts to track birds, bird banding/ringing (which she traces back to Audubon), and ending with ‘community science’ projects such as Breeding Bird Surveys and eBird. THIS IMAGE NOT IN THE BOOK. Schulman, 2023.

Science 238

Science Illinois Investigation 2006 238

10,000 Birds

AUGUST 26, 2021

And apart from local people, primate researchers sometimes spot it, but it is a species seen by fewer than ten living birders. This book is essentially about those birds that breed on the continent south of the Sahara, a topic few birders are familiar with.

Congo 264

Congo Africa Madagascar Kenya 264

10,000 Birds

MARCH 31, 2012

The newest bird on the brink to capture her fertile imagination is the California Condor, on which she graciously shares her research and ruminations: Sometimes as a writer you recognize there’s been something overlooked in your midst—something quietly abiding. Their size doesn’t escape you. You think of turkey dressed in black.

California Condor 247

California Condor California Idaho Utah 247

10,000 Birds

MAY 25, 2011

His summers during college were spent as a biological technician, monitoring breeding birds for Point Reyes Bird Observatory in Eastern Oregon, and also five seasons in Black Hills, SD, working for the Rocky Mountain Bird Observatory.

Venezuela 160

Venezuela Brazil Iowa Guatemala 160

10,000 Birds

AUGUST 26, 2015

If you have read many of my posts here at 10000 Birds, you may have noticed that much of my research on bird species is derived from Birds of North America Online (BNA), a collaboration of the Cornell Lab of Ornithology and the American Ornithologists’ Union. This is the more widespread distribution map for the Purple Finch.

North America 169

North America America Species Breeding 169

10,000 Birds

FEBRUARY 12, 2013

Some uncountable species, like Mitred Parakeets , are in fact way more numerous than some of the countable species and they are clearly breeding in well-established populations. I suspect that way more research and documentation is conducted on indigenous bird species.

Miami 166

Miami Parrots Research Alaska 166

10,000 Birds

MARCH 8, 2011

But research has shown that some plovers even use the super-sensitive soles of their feet to detect movement beneath the substrate. Consider Estero Lagoon for example… In North America there are nine regular plover species, ten if you include the more vagrant Common Ringed Plover.

Florida 228

Florida South Africa 2011 Africa 228