directive @core(feature: String!) repeatable on SCHEMA

directive @join__owner(graph: join__Graph!) on OBJECT

directive @join__type(
    graph: join__Graph!
    key: String!
    resolvable: Boolean = true
) repeatable on OBJECT | INTERFACE

directive @join__field(
    graph: join__Graph
    requires: String
    provides: String
) on FIELD_DEFINITION

directive @join__graph(name: String!, url: String!) on ENUM_VALUE

enum join__Graph {
    BIRDWATCH_BASIC @join__graph(name: "birdwatch-basic", url: "http://example.com/birdwatch-basic")
    OBSERVATIONS @join__graph(name: "observations", url: "http://example.com/observations")
    SIGHTINGS @join__graph(name: "sightings", url: "http://example.com/sightings")
}

scalar DateTime

type Bird @fieldMarks(plumage: "juvenile") @fieldMarks(plumage: "adult") {
    id: ID!
    location: String! @tag(name: "locationService") @tag(name: "b") @tag(name: "a")
    name: String!
    notes: String @deprecated(reason: "Field is obsolete due to new data model.")
    observedAt: DateTime! @deprecated(reason: "Use UNIX timestamps instead as customary in bird watching")
    species: String!
}

type BirdObservation {
    bird: Bird! @join__field(graph: OBSERVATIONS)
    observationID: ID! @join__field(graph: OBSERVATIONS)
    observerDetails: ObserverDetails! @join__field(graph: OBSERVATIONS)
    timeOfObservation: DateTime! @join__field(graph: OBSERVATIONS)
}

type ObserverDetails {
    membershipNumber: String @join__field(graph: OBSERVATIONS)
    name: String! @join__field(graph: OBSERVATIONS)
    observerType: ObserverType! @join__field(graph: OBSERVATIONS)
}

type BirdSighting @deprecated(reason: "we haven't seen any birds in a while :(") {
    bird: Bird! @join__field(graph: SIGHTINGS) @pelagic
    observer: String! @join__field(graph: SIGHTINGS)
    sightingID: ID! @join__field(graph: SIGHTINGS)
    weatherConditions: String @join__field(graph: SIGHTINGS)
}

type Query {
    bird(id: ID!): Bird @join__field(graph: BIRDWATCH_BASIC)
    birdObservation(observationID: ID!): BirdObservation @join__field(graph: OBSERVATIONS)
    birdObservations(filters: BirdObservationFilters): [BirdObservation] @join__field(graph: OBSERVATIONS)
    birdSighting(sightingID: ID!, private: Boolean @deprecated): BirdSighting @join__field(graph: SIGHTINGS)
    birdSightings: [BirdSighting] @join__field(graph: SIGHTINGS)
    birds: [Bird] @join__field(graph: BIRDWATCH_BASIC)
}

enum ObserverType {
    AMATEUR
    SEMIPROFESSIONAL @deprecated(reason: "No such thing as semiprofessionals")
    PROFESSIONAL
}

input BirdObservationFilters {
    observedAt: DateTime @deprecated(reason: "UNIX timestamps instead, as usual in bird watching")
    observerType: ObserverType
    observerName: String
    first: Int
}