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What the sources say

Sandhill CraneAntigone canadensis

Every figure, record and mechanism on the Sandhill Crane profile was written from a source, and this is the working table behind it: 50 claims checked word for word against these sources. The left column is what the page says. The right column is the source's own words, copied, not paraphrased; a ... marks a cut and[brackets] an insertion. Open any source and check it yourself.

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Source
01

The IUCN Red List of Threatened Species 2021

Grus canadensis. The IUCN Red List of Threatened Species 2021: e.T22692078A188597759.

The page saysLeast Concern
The source saysYear of last assessment 2021 IUCN Red List categoryNote: #1229: BirdLife is the Red List authority for birds, and its Data Zone factsheet (the reference's fullText) carries the 2020 assessment published in 2021 (10.2305/iucn.uk.2021-3.rlts.t22692078a188597759.en): "For these reasons the species is evaluated as Least Concern." Hand-cached from the page as rendered in Chrome, since the factsheet is drawn by JavaScript
The page saysthe Red List rates the species Least Concern
The source saysYear of last assessment 2021 IUCN Red List categoryNote: #1229: BirdLife is the Red List authority for birds, and its Data Zone factsheet (the reference's fullText) carries the 2020 assessment published in 2021 (10.2305/iucn.uk.2021-3.rlts.t22692078a188597759.en): "For these reasons the species is evaluated as Least Concern." Hand-cached from the page as rendered in Chrome, since the factsheet is drawn by JavaScript

Source
02

Smithsonian's National Zoo and Conservation Biology Institute

Sandhill crane (Antigone canadensis). Smithsonian's National Zoo and Conservation Biology Institute.

The page saysA red-capped crane that duets with its mate and sleeps standing in the shallows.
The source saysboth sexes have a bright red patch on their headNote: tagline; duet and sleeping claimed below
The page saysPrairies, swamps, farm fields and river valleys, plus marshy tundra in the far north
The source saysThey live in prairies, swamps, agricultural fields, river valleys, andNote: stats.habitat; marshy tundra claim next
The page saysmarshy tundra in the far north
The source saysin the northernmost parts of their rangeNote: habitat tundra
The page saysSeeds, berries, roots and grain, plus rodents, snails, insects, frogs and lizards
The source saysSeeds, berries and roots are common food items, and, depending on availability, crop plants like corn and wheat grains. They will also eat small animals like rodents, snails, insects, frogs, lizards and nestling birdsNote: stats.diet
The page saysMated pairs call in unison, a loud rattling trumpet duet
The source saysThey are best known for their rattling trumpet call, which can be quite loud. When mated, males and females will stand close together and make this call in unison.Note: stats.superpower
The page saysA mated sandhill crane pair stands close together and calls at the same moment. The sound is a rattling trumpet, and it can be quite loud.
The source saysThey are best known for their rattling trumpet call, which can be quite loud. When mated, males and females will stand close together and make this call in unison.
The page saysonce a male has found a potential mate, he performs a dance of head bobbing and jumping in the air
The source saysOnce they have identified a potential mate, males will perform a courtship dance, which involves bobbing their heads and jumping in the air
The page saysFossil records show that sandhill cranes have been around for nearly 2.5 million years.
The source saysFossil records show that sandhill cranes have been around for nearly 2.5 million years.
The page saysAdults stand 3 to 4 feet (0.9 to 1.2 meters) tall and weigh 7 to 11 pounds (3 to 5 kilograms), with a wingspan of 5.5 to 6.5 feet.
The source saysAdults have impressive wingspans, ranging from 5.5 feet to 6.5 feet from tip to tip. They stand 3 to 4 feet (0.9-1.2 meters) tall, and weigh between 7 and 11 pounds (3-5 kilograms).
The page saysThey are grey with some tan body feathers, a long pointed beak, a bright red patch on the forehead and long legs that trail behind them in flight.
The source saysOverall gray in color with some tan body feathers, both sexes have a bright red patch on their head and white patches on their cheeks. They have long, pointed beaks, which are dark gray on color. They have long, gray legs, which trail behind them during flight.Note: leg colour dropped: Smithsonian says gray, ICF says black; forehead from ICF 'red patch on forehead' and Smithsonian 'bright red forehead'
The page saysThey can live 20 years or more, according to the Smithsonian's National Zoo
The source saysThese birds can live for 20 years or more.
The page sayssandhill cranes are usually found in open country near water: prairies, swamps, farm fields, river valleys
The source saysSandhill cranes are normally found in open areas near water. They live in prairies, swamps, agricultural fields, river valleys
The page saysThey often winter together in huge flocks. Some wintering grounds, such as the Bosque del Apache National Wildlife Refuge in New Mexico, hold up to 10,000 birds.
The source saysoften winter together in huge flocks. Some wintering grounds, like the Bosque del Apache National Wildlife Refuge in New Mexico, hold up to 10,000 individuals.
The page saysTheir large wingspan allows them to soar, conserving energy by coasting along thermal updrafts
The source saysTheir large wingspan allows them to soar, conserving energy by coasting along thermal updraftsNote: the parenthetical gloss on thermals is a definition, not a sourced claim
The page saysYoung cranes fly with their parents during migration and need nine to 10 months of close care before they live on their own.
The source saysthe chicks need nine to 10 months of close parental care before they are ready to live on their own. Young sandhill cranes fly with their parents during migration.
The page saysSandhill cranes are omnivores.
The source saysSandhill cranes are omnivorous.
The page saysSeeds, berries and roots are common food, along with crops such as corn and wheat grains, depending on availability.
The source saysSeeds, berries and roots are common food items, and, depending on availability, crop plants like corn and wheat grains.
The page saysThey also take rodents, snails, insects, frogs, lizards and nestling birds, probing with their pointed beaks in marshy ground.
The source saysThey will also eat small animals like rodents, snails, insects, frogs, lizards and nestling birds. They use their pointed beaks to probe for food in marshy areas.
The page saysUnlike herons, they rarely wade into open water to hunt fish.
The source saysunlike herons, they rarely wade into open water and hunt for fish
The page saysMost sleep standing on one leg in shallow water, heads and necks tucked under their shoulders.
The source saysMost sleep standing on one leg in shallow water with their heads and necks tucked under their shoulders.
The page saysSandhill cranes were once nearly extinct east of the Mississippi River, and their populations have rebounded.
The source saysOnce nearly extinct east of the Mississippi River, their populations have rebounded
The page sayschicks hatch with their eyes open and can walk and leave the nest a day later
The source saysChicks are born with their eyes open and covered in downy feathers. They are ready to walk and leave the nest a day after hatchingNote: faq4
The page saysFlying takes about two months.
The source sayscapable of flying after about two monthsNote: faq4
The page saysAlmost.
The source saysThey are ready to walk and leave the nest a day after hatchingNote: faq4 framing
The page saysA mated pair of sandhill cranes stands close together and calls in unison
The source saysThey are best known for their rattling trumpet call, which can be quite loud. When mated, males and females will stand close together and make this call in unison.Note: vibe.reason

Source
03

International Crane Foundation, Species Field Guide

Sandhill Crane. International Crane Foundation, Species Field Guide.

The page saysThe International Crane Foundation calls this unison duet a way to strengthen the pair bond and protect their territory.
The source saysUnison Calls | A duet performed by a pair, to strengthen their bond and protect their territory.
The page saysnotes that body size varies by subspecies
The source saysbody size varies by subspeciesNote: body; weight range claimed next
The page says3 to 6.5 kilograms
The source saysWEIGHT: ~ 3 – 6.5 kg, 6.5 – 14 lbs
The page saysThe two migratory subspecies breed across the northern United States and Canada and in eastern Siberia, then winter in the southern United States and northern Mexico.
The source saysThe two migratory subspecies (Lesser and Greater) are distributed across a broad breeding range in the northern U.S. and Canada as well as eastern Siberia, with wintering grounds in the southern United States and northern Mexico.
The page saysThree non-migratory subspecies have small ranges in the southern United States and Cuba.
The source saysThe three non-migratory subspecies (Mississippi, Cuban and Florida) have restricted ranges in the southern United States and Cuba.
The page saysThe International Crane Foundation estimates about 1,460,000 birds, give or take 230,000, with an increasing trend
The source saysPOPULATION: 1,460,000 ±230,000 TREND: IncreasingNote: the ICF page gives no year for the estimate
The page saysthe Mississippi sandhill crane is listed as endangered under the US Endangered Species Act
The source saysssp. pulla: Cites Appendix I & ESA: ENote: pulla = Mississippi per the SPECIES line: Grus c. pulla – Mississippi
The page saysMississippi
The source saysGrus c. pulla – MississippiNote: subspecies mapping
The page saysCuban
The source saysssp. nesiotes: Cites Appendix I & ESA: ENote: nesiotes = Cuban: 'Grus c. nesiotes – Cuban'
The page saysroughly 80 to 120 centimeters (3 to 5 feet) tall and 3 to 6.5 kilograms (6.5 to 14 pounds)
The source saysHEIGHT: ~ 80 – 120 cm, 3 – 5 ft WEIGHT: ~ 3 – 6.5 kg, 6.5 – 14 lbsNote: faq1
The page says1,460,000
The source saysPOPULATION: 1,460,000 ±230,000 TREND: IncreasingNote: faq3 population; body
The page saysincreasing
The source saysPOPULATION: 1,460,000 ±230,000 TREND: IncreasingNote: faq3 trend
The page saysLeast Concern
The source saysLeast Concern Sandhill CraneNote: faq3 ICF rating; the page header and STATUS: IUCN: LC
The page saysTwo non-migratory subspecies, the Mississippi and the Cuban sandhill cranes, are listed as endangered under the US Endangered Species Act.
The source saysssp. pulla: Cites Appendix I & ESA: E; ssp. nesiotes: Cites Appendix I & ESA: ENote: faq3; pulla = Mississippi, nesiotes = Cuban (SPECIES line); non-migratory: Mississippi, Cuban and Florida are the three non-migratory subspecies
The page says3 to 6.5 kilograms
The source saysWEIGHT: ~ 3 – 6.5 kg, 6.5 – 14 lbsNote: body: wider than the Smithsonian's 3 to 5
The page saysTwo non-migratory subspecies
The source saysThe three non-migratory subspecies (Mississippi, Cuban and Florida)Note: Mississippi and Cuban are two of the three
The page saysbody size varies by subspecies
The source saysbody size varies by subspeciesNote: faq1
The page saysa duet that strengthens the pair bond
The source saysUnison Calls | A duet performed by a pair, to strengthen their bond and protect their territory.Note: vibe.reason

Source
04

AnAge: The Animal Ageing and Longevity Database, Human Ageing Genomic Resources

AnAge entry for Grus canadensis. AnAge: The Animal Ageing and Longevity Database, Human Ageing Genomic Resources.

The page saysAnAge lists a wild record of 36.6 years.
The source saysMaximum longevity 36.6 years (wild)
The page saysmaximum of 36.6 years for a wild sandhill crane
The source saysMaximum longevity 36.6 years (wild)Note: faq2
The page saysbreeding normally begins at about age 5
The source saysbreeding normally only begins at about age 5Note: faq2
The page saysweightKg: 3.9
The source saysAdult weight 3,890 gNote: battleStats.weightKg, typical adult (#1117)

Source
05

Florida Fish and Wildlife Conservation Commission

Sandhill Cranes. Florida Fish and Wildlife Conservation Commission.

The page saysdangerLevel: Medium
The source saysThese “habituated” cranes may approach people closely and even grab food out of a person’s hand. In rare instances, cranes have been reported pecking people.Note: #1229: Medium is 'Can injure, but rarely seriously'. FWC reports rare pecking of people by cranes that have been fed; no source reports a serious injury

How the table was made: a writer drafted the profile from these sources and logged each claim with its quote, a reviewer with nothing but this table checked every sentence said no more than its quote, and a script confirmed each quote appears word for word in the source. The method is in the site'sAbout page.