10,000 Birds

DECEMBER 18, 2014

Fish and Wildlife Service has listed the “Rufa” population of Red Knot ( Calidris canutus rufa ) as a threatened species under the Endangered Species Act (ESA). The other sub-species, Calidris canutus roselaari , migrates along the Pacific Coast and breeds in Alaska and the Wrangel Island in Russia. Photo: Ron Knight.

Endangered Species 160

Endangered Species Protection Delaware Species 160

10,000 Birds

APRIL 2, 2013

A breeding bird atlas is a special kind of book. For birders, it’s the extremely large book, shelved in a place where it can’t crush the field guides, used to research the history of a bird in their area. So, what exactly does a breeding bird atlas contain? The resulting book, 616 pages in length, 6.4

Pennsylvania 230

Pennsylvania Breeding Birds Sparrows 230

10,000 Birds

APRIL 2, 2024

Osborn, a passionate field biologist who participates to the core of her being three re-introduction projects aimed at saving three very different, endangered species: Peregrine Falcon, Hawaiian Crow (‘Alala)*, and California Condor. Well-researched and footnoted, these sections never feel disconnected from the more personal sections.

California Condor 179

California Condor Falcons California Birds 179

10,000 Birds

NOVEMBER 13, 2023

It feels good to start a post with some truly attractive birds – such as two species of broadbills. Strangely, there do not seem to be many papers on this species. In one paper , you can find fascinating sentences such as “The new species is most similar to D. You can see why here.

Sri Lanka 215

Sri Lanka Birds Taiwan Cats 215

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 158

San Francisco North America Seals Sanctuary 158

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 189

Science Illinois Investigation Research 189

10,000 Birds

JUNE 28, 2017

A new study published in The Condor analyzed the feathers of Bobolinks to determine what they eat after they leave their North American breeding grounds and fly south for the winter. The research suggests that rice emerges as an important food source late in the winter, just as harvesting time—and northern migration time—are at hand.

Advocacy 100

Advocacy South America Research America 100

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. Their habitats vary widely in both rural and urban landscapes; open habitats are preferred and the species generally shuns only extensively forested areas and wetlands 1.

Hunters 176

Hunters Hunting North America Game 176

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. We hope that our journey will provide important information about many Neotropical bird species as well as inform conservation.” Very little is known about this enigmatic species.

South America 184

South America San Diego Mexico America 184

10,000 Birds

AUGUST 26, 2015

You can see some of my older Lassen Park posts featuring several other species from this beautiful park here. This week I am reporting on the Cassin’s Finch ( Haemorhous cassinii ), another western species found nesting in Lassen Volcanic National Park. This is the male of the species (click on photos for full sized images).

North America 166

North America Research America Species 166

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. And a mere 120 bird species would be a good reason not to take Polynesia as an option. So, the perfect country to move to needs to have at least twice as many species as Serbia.

Sri Lanka 257

Sri Lanka Botswana Africa Serbia 257

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. But not at all unexpected, really. __.

Science 151

Science Iraq Research Birds 151

10,000 Birds

NOVEMBER 6, 2018

It actually makes a lot of sense, the geographic features of the isthmus between North America (including Mexico, because Mexico is part of North America) and South America cut across political lines, as do birds. It is the first bird field guide to every country of Central America (plus the islands governed by those countries).

America 213

America El Salvador Costa Rica Honduras 213

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. The genus Passer has several well-recognized and recognizable species in Europe, and still holds several enigmas. Bird blogging in May always gives me the creeps.

Sparrows 218

Sparrows Italy Asia Austria 218

10,000 Birds

MARCH 3, 2020

Diversity of habitat means, of course, great biodiversity, and the Introduction boasts that Bolivia “is the richest landlocked nation on Earth for bird diversity, the sixth richest overall, and the fifth richest in the Americas” (p. That’s pretty amazing–Bolivia has more bird species than India! ″ x 9.5″x

Bolivia 174

Bolivia Birds Brazil Switzerland 174

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 180

Asia Europe Germany Breeding 180

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 158

Montana Owls Denver Barn Owls 158

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 166

Blackbirds Trinidad Costa Rica Nicaragua 166

10,000 Birds

SEPTEMBER 4, 2018

There are 35 raptor species that have a presence in the United States and Canada, 56 (more or less) if you count by subspecies, and they are all covered in admirable, exhausting, unbelievable detail in B irds of Prey of the East: A Field Guide and Birds of Prey of the West: A Field Guide by Brian K.

North America 192

North America Birds Mississippi Bald Eagle 192

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 217

North America Birds San Francisco Suffering 217

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. Otun Quimbaya remains a very good place to view this highly enigmatic and entertaining species. Torrent Ducks are the thrill-seekers of the avian world.

Ducks 243

Ducks Colombia South America Squirrels 243

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. Proposal 2013-A-7 would split the Sage Sparrow ( Amphispiza belli ) into two species: Great Basin Sage Sparrow ( A. Sandwich Tern split. acuflavida ).

2013 186

2013 Sparrows Owls Stray 186

10,000 Birds

FEBRUARY 12, 2013

Nearly 70 species of parrots have been recorded flying free at some stage or another in Miami, including Hyacinth Macaws. Dozens of other introduced bird species, largely escapees from pet owners, now call Miami home. But I couldn’t help but get more excited about the countable species as opposed to the uncountable ones.

Miami 135

Miami Parrots Research Birds 135

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 268

Eggs Venezuela Porcupines 2008 268

10,000 Birds

JANUARY 5, 2016

All species are from the ABA area, and all groups must meet at least one of these criteria: (1) the group “represented a good opportunity to build core birding skills,” (2) the authors thought it was a group that needed “a refreshed treatment,” (3) the authors were intrigued by the group and wanted to present it using their unique format.

Birds 190

Birds Groups 2015 North America 190

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. First published in 1973 in association with the Asa Wright Center, the book focuses on species descriptions, with illustrations grouped together in plates positioned in the center of the book. The AOU has not accepted that split.

Trinidad 196

Trinidad Birds South America Research 196

10,000 Birds

SEPTEMBER 22, 2014

Though Ron is based in Ontario his reports are eagerly anticipated by birders across the northeastern United States and eastern Canada because it takes into account a vast array of data to figure out which irruptive species might show up where. Red Crossbills comprise at least 10 “call types” in North America.

2014 238

2014 2015 Alaska New Hampshire 238

10,000 Birds

JUNE 2, 2015

Third, observing and photographing breeding birds and their young have become acts of ethical confusion as birders, photographers, and organizational representatives debate the impact of our human presence on the nesting process. Some chapters focus on one species (Yellow Warbler), some on several related species (Chickadees and Nuthatches).

Eggs 263

Eggs Family 2006 New York 263

10,000 Birds

NOVEMBER 20, 2012

The very first thing we notice about this large member of the Galliformes is that there is a wild version and a domestic version, and although the two are rather different, they are both given the same species name, Meleagris gallopavo. This is not entirely unknown among domestic animals, but many domesticates have no living wild version.

Turkey 203

Turkey Columbus Spain Fowl 203

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. Fish and Wildlife Service endangered species list.

Michigan 230

Michigan Bahamas Endangered Species Research 230

10,000 Birds

OCTOBER 2, 2018

We saw sparrows–a total of 14 species–and we saw many other great prairie birds, and we often saw them perched on posts. I don’t know much about prairies, but I have discovered that there is more to them than just grass, and that they are home to hundreds of butterfly and bee species and thousands of moth species.

North Dakota 140

North Dakota Birds Sparrows Blackbirds 140

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 236

United States 2011 Guatemala North America 236

10,000 Birds

MAY 30, 2019

And they were the ones who, at the end of the conference, decided to get together and talk about the possibility of breeding Peregrines in captivity as a way of at least saving the species from extinction.” Again, Cade led with solid evidence acquired through his own research.

Falcons 181

Falcons California Condor Alaska Texas 181

10,000 Birds

MARCH 4, 2011

Among these white-headed/dark-winged gulls formerly lumped into the genus Larus , there were 18+ recognized species the last time I checked, sharing similarities that make telling them apart for the amateur birdwatcher very difficult. 1998), then the proper name for this species is L. fuscus – should be separated as species.

2011 157

2011 Cyprus Deer Species 157

10,000 Birds

FEBRUARY 5, 2012

This thrush is extremely common in urban and suburban Germany and one of the most conspicuous bird species here, comparable to the American Robin in North America. It appears as if some bird species are more susceptible to an infection than others, but many species are affected.

Germany 160

Germany Blackbirds 2006 Denmark 160

10,000 Birds

MARCH 8, 2011

Getting to know the subtleties in differences between closely related species takes years of dedication and practice. Thirdly, many species of shorebirds display such vast differences in their summer and winter plumages that it is always interesting to note how some birds in the same flock are in contrasting stages of plumage.

Florida 191

Florida South Africa 2011 Africa 191

10,000 Birds

MAY 23, 2023

What are the best field guides for birds in North America? Birders often venture into various habitats, such as forests, wetlands, grasslands, or coastal areas, to encounter different bird species. The primary objective of birding is to identify bird species based on their physical characteristics, behavior, and vocalizations.

United States 147

United States North America Birds America 147