| "ObservationID" | the ID of the observation (default) | 
| "ObservationDateString" | the date of the observation as a string | 
| "ObservationDate" | the date of the observation | 
| "TimeObservedAt" | the time of the observation | 
| "TimeZone" | the time zone | 
| "OutOfRange" | out of range | 
| "UserID" | the user ID | 
| "UserLogin" | the user login | 
| "CreatedAt" | date when the observation was created | 
| "UpdatedAt" | date when the observation was last updated | 
| "QualityGrade" | the quality grade of the observation (default) | 
| "License" | the license of the observation data | 
| "ObservationURL" | the URL of the observation | 
| "ImageURL" | the URL of the main image (default) | 
| "SoundURL" | the URL of the recorded sound | 
| "TagList" | the list of tags associated to the observation | 
| "Description" | the description of the observation added by the user | 
| "IDPlease" | indicates whether the observation needs identification | 
| "IdentificationAgreements" | the number of identification agreements | 
| "IdentificationDisagreements" | the number of identification disagreements | 
| "CaptiveCultivated" | indicates wheter the animal or plant of the observation was captive or cultivated | 
| "OauthApplicationId" | the OAuth application ID | 
| "PlaceGuess" | the place guess | 
| "GeoPosition" | the GeoPosition of the observation | 
| "Latitude" | the latitude coordinate | 
| "Longitude" | the longitude coordinate | 
| "PositionalAccuracy" | the positional accuracy | 
| "PrivatePlaceGuess" | the private place guess name | 
| "CoordinatesObscured" | indicates wheter the observation has coordinates obscured | 
| "Geoprivacy" | the geoprivacy of the location of the observation | 
| "TaxonGeoprivacy" | the taxon geoprivacy | 
| "PrivateLatitude" | the private latitude | 
| "PrivateLongitude" | the private longitude | 
| "PrivatePositionalAccuracy" | the private positional accuracy | 
| "PositioningMethod" | the positioning method | 
| "PositioningDevice" | the positioning device | 
| "Town" | the place town name | 
| "County" | the county name | 
| "Country" | the country name | 
| "PlaceAdmin1" | the administrative place 1 | 
| "PlaceAdmin2" | the administrative place 2 | 
| "SpeciesGuess" | the species guess | 
| "ScientificName" | the scientific name | 
| "CommonName" | the common name | 
| "IconicTaxonName" | the iconic taxon name | 
| "IconicTaxonEntity" | the iconic taxon entity | 
| "TaxonID" | the taxon ID | 
| "TaxonKingdom" | the taxon kingdom name | 
| "TaxonPhylum" | the taxon phylum name | 
| "TaxonSubphylum" | the taxon subphylum name | 
| "TaxonSuperclass" | the taxon superclass name | 
| "TaxonClass" | the taxon class name | 
| "TaxonSubclass" | the taxon subclass name | 
| "TaxonSuperorder" | the taxon superorder name | 
| "TaxonOrder" | the taxon order name | 
| "TaxonSuborder" | the taxon suborder name | 
| "TaxonSuperfamily" | the taxon superfamily name | 
| "TaxonFamily" | the taxon family name | 
| "TaxonSubfamily" | the taxon subfamily name | 
| "TaxonSupertribe" | the taxon supertribe name | 
| "TaxonTribe" | the taxon tribe name | 
| "TaxonSubtribe" | the taxon subtribe name | 
| "TaxonGenus" | the taxon genus name | 
| "TaxonGenushybrid" | the taxon genushybrid name | 
| "TaxonSpecies" | the taxon species name | 
| "TaxonHybrid" | the taxon hybrid name | 
| "TaxonSubspecies" | the taxon subspecies name | 
| "TaxonVariety" | the taxon variety name |