{"abstract":"We, the U.S. Fish and Wildlife Service (Service), determine threatened species status under the Endangered Species Act (Act), as amended, for the elfin-woods warbler (Setophaga angelae), a bird species in Puerto Rico. This rule will add this species to the List of Endangered and Threatened Wildlife. We are also adopting a rule under the authority of section 4(d) of the Act (a \"4(d) rule\") that is necessary and advisable to provide for the conservation of the elfin- woods warbler.","action":"Final rule.","agencies":[{"raw_name":"DEPARTMENT OF THE INTERIOR","name":"Interior Department","id":253,"url":"https://www.federalregister.gov/agencies/interior-department","json_url":"https://www.federalregister.gov/api/v1/agencies/253","parent_id":null,"slug":"interior-department"},{"raw_name":"Fish and Wildlife Service","name":"Fish and Wildlife Service","id":197,"url":"https://www.federalregister.gov/agencies/fish-and-wildlife-service","json_url":"https://www.federalregister.gov/api/v1/agencies/197","parent_id":253,"slug":"fish-and-wildlife-service"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2016/06/22/2016-14540.html","cfr_references":[{"chapter":null,"citation_url":null,"part":17,"title":50}],"citation":"81 FR 40534","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This rule is effective July 22, 2016.","disposition_notes":null,"docket_ids":["Docket No. FWS-R4-ES-2015-0144","4500030113"],"dockets":[],"document_number":"2016-14540","effective_on":"2016-07-22","end_page":40547,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2016/06/22/2016-14540.xml","html_url":"https://www.federalregister.gov/documents/2016/06/22/2016-14540/endangered-and-threatened-wildlife-and-plants-threatened-species-status-for-the-elfin-woods-warbler","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2016-14540?publication_date=2016-06-22","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2016-06-22/2016-14540/mods.xml","not_received_for_publication":null,"page_length":14,"page_views":{"count":579,"last_updated":"2026-06-24 20:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2016-06-22/pdf/2016-14540.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2016-14540.pdf?1466513147","publication_date":"2016-06-22","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2016/06/22/2016-14540.txt","regulation_id_number_info":{"1018-BA94":{"issue":"201604","html_url":"https://www.federalregister.gov/regulations/1018-BA94/endangered-and-threatened-wildlife-and-plants-listing-determination-for-the-elfin-woods-warbler","title":"Endangered and Threatened Wildlife and Plants; Listing Determination for the Elfin-Woods Warbler","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=201604&RIN=1018-BA94&operation=OPERATION_EXPORT_XML","priority_category":"Substantive, Nonsignificant"}},"regulation_id_numbers":["1018-BA94"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"Peer Review Letter Wunderle","document_id":"FWS-R4-ES-2015-0144-0009"},{"title":"Peer Review Letter Salguero-Faria","document_id":"FWS-R4-ES-2015-0144-0008"},{"title":"Peer Review Letter Delannoy","document_id":"FWS-R4-ES-2015-0144-0007"},{"title":"Peer Review Letter Cano","document_id":"FWS-R4-ES-2015-0144-0006"},{"title":"Peer Review Letter Arendt","document_id":"FWS-R4-ES-2015-0144-0005"},{"title":"Peer Review Letter Anandon-Irizarry","document_id":"FWS-R4-ES-2015-0144-0004"},{"title":"Peer Review of Scientific Informationer Review Plan_Elfin-woods warbler pL","document_id":"FWS-R4-ES-2015-0144-0003"},{"title":"Literature Cited Elfin-woods warbler Proposed Listing","document_id":"FWS-R4-ES-2015-0144-0002"}],"regulatory_plan":{"html_url":"https://www.federalregister.gov/regulations/1018-BA94/endangered-and-threatened-wildlife-and-plants-listing-determination-for-the-elfin-woods-warbler","title":"Endangered and Threatened Wildlife and Plants; Listing Determination for the Elfin-Woods Warbler"},"comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=FWS-R4-ES-2015-0144","supporting_documents_count":8,"docket_id":"FWS-R4-ES-2015-0144","regulation_id_number":"1018-BA94","title":"Threatened Species Status for the Elfin-woods warbler with 4(d) Rule","checked_regulationsdotgov_at":"2016-07-12T06:00:13Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":40534,"subtype":null,"title":"Endangered and Threatened Wildlife and Plants; Threatened Species Status for the Elfin-Woods Warbler With 4(d) Rule","toc_doc":"Elfin-woods Warbler","toc_subject":"Endangered and Threatened Wildlife and Plants:","topics":["Endangered and threatened species","Exports","Imports","Reporting and recordkeeping requirements","Transportation"],"type":"Rule","volume":81}