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Data Quality

Understanding the eBird review and data quality process

Did you know that every record submitted to eBird goes through the eBird data verification process? Using a combination of automated data filters and a network of local experts, eB...

eBird Review Standards

Every record entered into eBird is checked for accuracy, first by automated filters that flag unusual records, and then by expert reviewers who devote their personal time to ensure...

Breeding Code Reinterpretation

When perusing breeding codes in eBird, you may occasionally notice that there is a (?) next to the breeding code that has been reported. This is a reinterpreted breeding code. This...

Location issue

Reviewers have tagged some eBird checklists as having location issues; these checklists show this message at the top: Location issue. This checklist has been flagged because there...

List building

Reviewers have tagged some eBird checklists as "list-building"; these show this message at the top: List-building checklist. This checklist has been flagged as a personal list-bui...

Regional locations

We automatically tag eBird checklists from 'regional locations', which will show one of these messages at the top: Country-level. The location for this checklist represents an en...

Distance too long

Some checklists may display this message: Distance too long. This checklist has been flagged for covering a large distance. A more specific location is required for public display...

Hidden List

When viewing checklists from other birders, checklists that the eBirder has opted to hide will display this message: Hidden checklist. This checklist has been hidden from public v...

Duplicated submission

Reviewers have tagged some eBird checklists as duplicated submissions and these will show this message at the top: Duplicated submission. This checklist is flagged as a duplicate ...

Imprecise date

Reviewers have tagged some eBird checklists as having imprecise dates; these checklists show this message at the top: Imprecise date. This list has sightings that span more than o...

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