Property talk:P4798

Documentation

• Start a query
• Current uses
• Statistics by class
• String length
• List of qualifiers
• Count

BTO Birds of Britain ID
identifier for a bird species or sub-species in the BTO Birds of Britain/ BirdFacts database

Associated item	British Trust for Ornithology (Q2925763)
Applicable "stated in" value	British Trust for Ornithology (Q2925763)
Data type	External identifier
Domain	According to this template: Birds According to statements in the property: taxon (Q16521) When possible, data should only be stored as statements
Allowed values	bob[1-9]\d{1,4}
Example	Pied Avocet (Q26147) → bob4560 Black Redstart (Q26755) → bob11210 Little Grebe (Q25421) → bob70 European Shag (Q115452) → bob800
Source	https://www.bto.org/about-birds/birdfacts
External links	Use in sister projects: [ar] • [de] • [en] • [es] • [fr] • [he] • [it] • [ja] • [ko] • [nl] • [pl] • [pt] • [ru] • [sv] • [vi] • [zh] • [commons] • [species] • [wd] • [en.wikt] • [fr.wikt].
Formatter URL	https://app.bto.org/birdfacts/results/$1.htm
Tracking: usage	Category:Pages using Wikidata property P4798 (Q57632468)
Related to country	United Kingdom (Q145) (See 326 others)
See also	BTO five-letter code (P4567), EURING number (P3459)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other external identifier Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Mix'n'match (Report) Database reports/Constraint violations/P4798 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 273 Main statement 259 out of 258 (100% complete) 94.9% of uses Qualifier 4 1.5% of uses Reference 10 3.7% of uses
Search for values

[create Create a translatable help page (preferably in English) for this property to be included here]

Single value: this property generally contains a single value. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4798#Single value, SPARQL

Distinct values: this property likely contains a value that is different from all other items. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4798#Unique value, SPARQL (every item), SPARQL (by value)

Type “taxon (Q16521)”: item must contain property “instance of (P31)” with classes “taxon (Q16521)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4798#Type Q16521, SPARQL

Format “bob[1-9]\d{1,4}”: value must be formatted using this pattern (PCRE syntax). (Help)

List of violations of this constraint: Database reports/Constraint violations/P4798#Format, hourly updated report, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4798#Entity types

Scope is as main value (Q54828448), as reference (Q54828450): the property must be used by specified way only (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4798#Scope, SPARQL

IDs broken?

@Pigsonthewing, Thierry Caro:

Père Igor is warning us that the link for this property (and the IDs themselves?). I had a quick look and indeed something seems wrong somewhere. Could you have a look please?

Cheers, VIGNERON (talk) 13:09, 20 November 2023 (UTC)

@Pigsonthewing, Thierry Caro or anyone that might be interested by this property:

I hope I'm not bothering you but since VIGNERON tagged you for this question, I am guessing you might have opinions or useful remarks for this problem.

The BirdFacts interface changed, the home URL being now [1]https://www.bto.org/understanding-birds/birdfacts

The species pages still exist, but do not use the old IDs starting with bob. Instead, there's a character string in the URL of each species page, for example barn-owl or buzzard

To me the question is whether to delete the BirdFacts ID (and eventually the property itself) since those character strings do not seem to be meant to be pervasive identifiers, or to update the value in each statement. If the latter is preferred, I should be able to do it some time in the coming weeks using OpenRefine, if I manage to crawl the birdfacts website, since each species page got the BTO identifier which can be used to align the identifiers with the wikidata pages. Kaisse (talk) 11:57, 21 November 2023 (UTC)

The usual process is to mark the property as historical, find an archived version of the formatter URL, keep the values, and create a new one. Andy Mabbett (Pigsonthewing); Talk to Andy; Andy's edits 20:37, 21 November 2023 (UTC)