{"abstract":"We, the U.S. Fish and Wildlife Service (FWS), revise the definition of \"hybrid\" as it relates to birds protected under the Migratory Bird Treaty Act. We revise the definition to make it clear that it applies to all offspring of any species listed at 50 CFR 10.13.","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/2013/11/01/2013-26069.html","cfr_references":[{"chapter":null,"citation_url":null,"part":21,"title":50}],"citation":"78 FR 65576","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This rule is effective on December 2, 2013.","disposition_notes":null,"docket_ids":["Docket No. FWS-R9-MB-2011-0060","FF09M21200-134-XMB123199BPP0"],"dockets":[],"document_number":"2013-26069","effective_on":"2013-12-02","end_page":65578,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2013/11/01/2013-26069.xml","html_url":"https://www.federalregister.gov/documents/2013/11/01/2013-26069/migratory-bird-permits-definition-of-hybrid-migratory-bird","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2013-26069?publication_date=2013-11-01","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2013-11-01/2013-26069/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":211,"last_updated":"2026-07-26 08:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2013-11-01/pdf/2013-26069.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2013-26069.pdf?1383224119","publication_date":"2013-11-01","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2013/11/01/2013-26069.txt","regulation_id_number_info":{"1018-AX90":{"issue":"201304","html_url":"https://www.federalregister.gov/regulations/1018-AX90/migratory-bird-permits-definition-of-hybrid-migratory-bird","title":"Migratory Bird Permits; Definition of \"Hybrid\" Migratory Bird","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=201304&RIN=1018-AX90&operation=OPERATION_EXPORT_XML","priority_category":"Substantive, Nonsignificant"}},"regulation_id_numbers":["1018-AX90"],"regulations_dot_gov_info":{"supporting_documents":[],"regulatory_plan":{"html_url":"https://www.federalregister.gov/regulations/1018-AX90/migratory-bird-permits-definition-of-hybrid-migratory-bird","title":"Migratory Bird Permits; Definition of \"Hybrid\" Migratory Bird"},"comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=FWS-R9-MB-2011-0060","supporting_documents_count":0,"docket_id":"FWS-R9-MB-2011-0060","regulation_id_number":"1018-AX90","title":"Definition of “Hybrid” Migratory Bird","checked_regulationsdotgov_at":"2013-11-21T08:05:35Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":65576,"subtype":null,"title":"Migratory Bird Permits; Definition of “Hybrid” Migratory Bird","toc_doc":"Definition of Hybrid Migratory Bird","toc_subject":"Migratory Bird Permits:","topics":["Exports","Hunting","Imports","Reporting and recordkeeping requirements","Transportation","Wildlife"],"type":"Rule","volume":78}