--- type: "firecrawl-provider" description: "Public-domain natural and human-made sounds recorded by the U.S. National Park Service, from the NPS Sound Gallery (about 70 clips in ten categories: amphibians, birds, cultural-historical, geological, hydrological, insects, machines, mammals, meteorological, reptiles) and the Yellowstone, Rocky Mountain and Glacier Bay park sound libraries. Search or browse by keyword, library and category, and read a sound page's clips with title, description, transcript, park, the per-clip credit, a licence object, a ready attribution line and the MP3 URL. Audio files are linked, never fetched. Durations are not published." use_when: "Public-domain natural and human-made sounds recorded by the U.S. National Park Service, from the NPS Sound Gallery (about 70 clips in ten categories: amphibians, birds, cultural-historical, geological, hydrological, insects, machines, mammals, meteorological, reptiles) and the Yellowstone, Rocky Mountain and Glacier Bay park sound libraries. Search or browse by keyword, library and category, and read a sound page's clips with title, description, transcript, park, the per-clip credit, a licence object, a ready attribution line and the MP3 URL. Audio files are linked, never fetched. Durations are not published." categories: "Entertainment" capabilities: 2 credits_per_call: 5 --- # National Park Service Sound Libraries on Firecrawl Alexandria Public-domain natural and human-made sounds recorded by the U.S. National Park Service, from the NPS Sound Gallery (about 70 clips in ten categories: amphibians, birds, cultural-historical, geological, hydrological, insects, machines, mammals, meteorological, reptiles) and the Yellowstone, Rocky Mountain and Glacier Bay park sound libraries. Search or browse by keyword, library and category, and read a sound page's clips with title, description, transcript, park, the per-clip credit, a licence object, a ready attribution line and the MP3 URL. Audio files are linked, never fetched. Durations are not published. - Categories: Entertainment - Category index: [Entertainment category](https://firecrawl.dev/alexandria/agents/categories/entertainment) - Provider key: `nps-gov` - Access: Firecrawl credits - Cost: 5 credits per call ## More - [Human guide](https://firecrawl.dev/app/alexandria/nps-gov) - [OpenAPI spec](https://firecrawl.dev/alexandria/agents/providers/nps-gov/openapi.json) ## Capabilities - [Get sound](https://firecrawl.dev/alexandria/agents/providers/nps-gov/sound-effects/get_sound): Read one nps.gov sound page: every audio clip it plays with title, description, transcript, credit, date created, park, licence object (public domain where the library states it, else U.S. Government work), attribution line and MP3 URL. Works for NPS Sound Gallery, Yellowstone, Rocky Mountain and Glacier Bay pages and any other nps.gov page with the standard audio player. Audio files are linked, never fetched. - [Search sounds](https://firecrawl.dev/alexandria/agents/providers/nps-gov/sound-effects/search_sounds): Find National Park Service sound pages by keyword across the NPS Sound Gallery and the Yellowstone, Rocky Mountain and Glacier Bay sound libraries (library: all by default), or browse a library or category. Returns every matching index entry, then reads up to limit sound pages (default 5 with a query, 0 when browsing) and returns their clips with credit, licence object, attribution line, park and MP3 URL. Keyword matching runs over index titles, aliases and categories; when no title has every word, pages matching some words are returned best first. ## 1. Choose this provider when Public-domain natural and human-made sounds recorded by the U.S. National Park Service, from the NPS Sound Gallery (about 70 clips in ten categories: amphibians, birds, cultural-historical, geological, hydrological, insects, machines, mammals, meteorological, reptiles) and the Yellowstone, Rocky Mountain and Glacier Bay park sound libraries. Search or browse by keyword, library and category, and read a sound page's clips with title, description, transcript, park, the per-clip credit, a licence object, a ready attribution line and the MP3 URL. Audio files are linked, never fetched. Durations are not published. ## 2. Minimal request Call `POST https://api.firecrawl.dev/v2/scrape` with `{ alexandria: { provider, capability, options } }`. For a batch, send `{ alexandria: [...] }` with up to 10 calls. ```json { "provider": "nps-gov", "capability": "sound-effects/get_sound", "options": { "url": "https://www.nps.gov/subjects/sound/sounds-elk.htm" } } ``` ## 3. Add provider options Use only the options needed for the task: - `url` (string, required): An nps.gov sound page, e.g. https://www.nps.gov/subjects/sound/sounds-elk.htm. Example: `` ## 4. Request through your preferred interface ### JavaScript ```javascript const result = await firecrawl.scrape({ alexandria: { provider: "nps-gov", capability: "sound-effects/get_sound", options: { url: "https://www.nps.gov/subjects/sound/sounds-elk.htm", }, }, }); ``` ### Python ```python result = firecrawl.scrape_alexandria({ "provider": "nps-gov", "capability": "sound-effects/get_sound", "options": { "url": "https://www.nps.gov/subjects/sound/sounds-elk.htm" } }) ``` ### cURL ```sh curl https://api.firecrawl.dev/v2/scrape \ -H "Authorization: Bearer $FIRECRAWL_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "alexandria": { "provider": "nps-gov", "capability": "sound-effects/get_sound", "options": { "url": "https://www.nps.gov/subjects/sound/sounds-elk.htm" } } }' ``` ### CLI ```sh firecrawl scrape 'nps-gov/sound-effects/get_sound' \ --options '{"url":"https://www.nps.gov/subjects/sound/sounds-elk.htm"}' ``` ### MCP Call the FCX MCP retrieve tool with this object: ```json { "provider": "nps-gov", "capability": "sound-effects/get_sound", "options": { "url": "https://www.nps.gov/subjects/sound/sounds-elk.htm" } } ``` Ask for only the returned fields needed by the task. ## 5. Full request shape ```json { "provider": "nps-gov", "capability": "sound-effects/get_sound", "options": { "url": "https://www.nps.gov/subjects/sound/sounds-elk.htm" } } ``` ## 6. Response data The response includes `success`, `provider`, `capability`, `creditsCost` and `data`. This example shows the provider payload in `data`: ```json { "count": 1, "library": "gallery", "observed_at_ms": 1793747704475, "page_url": "https://www.nps.gov/subjects/sound/sounds-elk.htm", "sounds": [ { "attribution": "\"Elk bugle\" by NPS, public domain, via NPS Sound Gallery (https://www.nps.gov/subjects/sound/sounds-elk.htm)", "category": null, "creator": { "name": "NPS", "url": null }, "credit": "NPS", "date_created": null, "description": "Sound recording of bugling elk, Great Sand Dunes National Park and Preserve, Colorado.", "download_url": "https://www.nps.gov/nps-audiovideo/legacy/mp3/nri/avElement/nri-ElkBuglingGRSA.mp3", "download_urls": { "mp3": "https://www.nps.gov/nps-audiovideo/legacy/mp3/nri/avElement/nri-ElkBuglingGRSA.mp3" }, "duration_seconds": null, "formats": [ "mp3" ], "id": "subjects/sound/sounds-elk#1", "library": "gallery", "license": { "attribution_required": false, "code": "public-domain", "commercial_use": true, "name": "Public domain (stated by the National Park Service)", "note": "NPS asks that you credit the National Park Service, or the credit shown, where appropriate.", "restricted": false, "url": "https://www.nps.gov/subjects/sound/gallery.htm" }, "page_url": "https://www.nps.gov/subjects/sound/sounds-elk.htm", "park": "Great Sand Dunes National Park and Preserve", "preview_url": "https://www.nps.gov/nps-audiovideo/legacy/mp3/nri/avElement/nri-ElkBuglingGRSA.mp3", "sample_rate": null, "title": "Elk bugle", "transcript": "The loud screeching, groaning sounds of elks bugling." } ], "source_url": "https://www.nps.gov/subjects/sound/sounds-elk.htm", "title": "Elk bugle" } ``` ## API reference-derived contract The following capability contract is generated from the same normalized Alexandria API reference exposed in the API spec. ### Get sound - Capability: `sound-effects/get_sound` - Description: Read one nps.gov sound page: every audio clip it plays with title, description, transcript, credit, date created, park, licence object (public domain where the library states it, else U.S. Government work), attribution line and MP3 URL. Works for NPS Sound Gallery, Yellowstone, Rocky Mountain and Glacier Bay pages and any other nps.gov page with the standard audio player. Audio files are linked, never fetched. - Instructions: Credit and MP3 link for one clip page, e.g. https://www.nps.gov/subjects/sound/sounds-elk.htm or https://www.nps.gov/yell/learn/photosmultimedia/sounds-oldfaithful.htm. - Cost: 5 credits per call - Capability file: [Get sound](https://firecrawl.dev/alexandria/agents/providers/nps-gov/sound-effects/get_sound) Accepted options: - `url` (string, required): An nps.gov sound page, e.g. https://www.nps.gov/subjects/sound/sounds-elk.htm. Example: `` Response schema example: ```json { "count": 1, "library": "gallery", "observed_at_ms": 1793747704475, "page_url": "https://www.nps.gov/subjects/sound/sounds-elk.htm", "sounds": [ { "attribution": "\"Elk bugle\" by NPS, public domain, via NPS Sound Gallery (https://www.nps.gov/subjects/sound/sounds-elk.htm)", "category": null, "creator": { "name": "NPS", "url": null }, "credit": "NPS", "date_created": null, "description": "Sound recording of bugling elk, Great Sand Dunes National Park and Preserve, Colorado.", "download_url": "https://www.nps.gov/nps-audiovideo/legacy/mp3/nri/avElement/nri-ElkBuglingGRSA.mp3", "download_urls": { "mp3": "https://www.nps.gov/nps-audiovideo/legacy/mp3/nri/avElement/nri-ElkBuglingGRSA.mp3" }, "duration_seconds": null, "formats": [ "mp3" ], "id": "subjects/sound/sounds-elk#1", "library": "gallery", "license": { "attribution_required": false, "code": "public-domain", "commercial_use": true, "name": "Public domain (stated by the National Park Service)", "note": "NPS asks that you credit the National Park Service, or the credit shown, where appropriate.", "restricted": false, "url": "https://www.nps.gov/subjects/sound/gallery.htm" }, "page_url": "https://www.nps.gov/subjects/sound/sounds-elk.htm", "park": "Great Sand Dunes National Park and Preserve", "preview_url": "https://www.nps.gov/nps-audiovideo/legacy/mp3/nri/avElement/nri-ElkBuglingGRSA.mp3", "sample_rate": null, "title": "Elk bugle", "transcript": "The loud screeching, groaning sounds of elks bugling." } ], "source_url": "https://www.nps.gov/subjects/sound/sounds-elk.htm", "title": "Elk bugle" } ``` ### Search sounds - Capability: `sound-effects/search_sounds` - Description: Find National Park Service sound pages by keyword across the NPS Sound Gallery and the Yellowstone, Rocky Mountain and Glacier Bay sound libraries (library: all by default), or browse a library or category. Returns every matching index entry, then reads up to limit sound pages (default 5 with a query, 0 when browsing) and returns their clips with credit, licence object, attribution line, park and MP3 URL. Keyword matching runs over index titles, aliases and categories; when no title has every word, pages matching some words are returned best first. - Instructions: "public domain elk bugle", "NPS thunderstorm sound with credit", "Yellowstone geyser recordings", "list the NPS Sound Gallery mammals", or a pasted nps.gov sound gallery or sound library index URL. Use get_sound for one page. - Cost: 5 credits per call - Capability file: [Search sounds](https://firecrawl.dev/alexandria/agents/providers/nps-gov/sound-effects/search_sounds) Accepted options: - `category` (string): Keep only entries in this section: a gallery category (Amphibians, Birds, Cultural-Historical, Geological, Hydrological, Insects, Machines, Mammals, Meteorological, Reptiles) or a Rocky Mountain section (Bird Sound, Natural Soundscapes, Wildlife Sounds and Soundscapes). Yellowstone and Glacier Bay entries have none. Example: `` - `library` (string): Which library to search: all (default), gallery (NPS Sound Gallery), yellowstone, rocky_mountain or glacier_bay. Example: `all` - `limit` (number): How many matching sound pages to read for clips, one request each; default 5 with a query, 0 when browsing. Example: `10` - `query` (string): Keywords, e.g. elk bugle, thunder, geyser, humpback whale. Example: `` - `url` (string): One of the four library index URLs, e.g. https://www.nps.gov/subjects/sound/gallery.htm. Example: `` Response schema example: ```json { "category": null, "count": 8, "entries": [ { "aliases": [], "category": "Mammals", "library": "gallery", "page_url": "https://www.nps.gov/subjects/sound/sounds-elk.htm", "title": "Elk" }, { "aliases": [], "category": null, "library": "yellowstone", "page_url": "https://www.nps.gov/yell/learn/photosmultimedia/sounds-elk.htm", "title": "Elk" } ], "libraries": [ "gallery", "yellowstone", "rocky_mountain", "glacier_bay" ], "library": "all", "match": "all", "observed_at_ms": 1793747704411, "pages_read": 2, "pages_without_audio": [], "query": "elk", "sounds": [ { "attribution": "\"Elk bugle\" by NPS, public domain, via NPS Sound Gallery (https://www.nps.gov/subjects/sound/sounds-elk.htm)", "category": "Mammals", "creator": { "name": "NPS", "url": null }, "credit": "NPS", "date_created": null, "description": "Sound recording of bugling elk, Great Sand Dunes National Park and Preserve, Colorado.", "download_url": "https://www.nps.gov/nps-audiovideo/legacy/mp3/nri/avElement/nri-ElkBuglingGRSA.mp3", "download_urls": { "mp3": "https://www.nps.gov/nps-audiovideo/legacy/mp3/nri/avElement/nri-ElkBuglingGRSA.mp3" }, "duration_seconds": null, "formats": [ "mp3" ], "id": "subjects/sound/sounds-elk#1", "library": "gallery", "license": { "attribution_required": false, "code": "public-domain", "commercial_use": true, "name": "Public domain (stated by the National Park Service)", "note": "NPS asks that you credit the National Park Service, or the credit shown, where appropriate.", "restricted": false, "url": "https://www.nps.gov/subjects/sound/gallery.htm" }, "page_url": "https://www.nps.gov/subjects/sound/sounds-elk.htm", "park": "Great Sand Dunes National Park and Preserve", "preview_url": "https://www.nps.gov/nps-audiovideo/legacy/mp3/nri/avElement/nri-ElkBuglingGRSA.mp3", "sample_rate": null, "title": "Elk bugle", "transcript": "The loud screeching, groaning sounds of elks bugling." }, { "attribution": "\"Bull Elk Bugling\" by NPS & MSU Acoustic Atlas/Jennifer Jerrett, public domain, via Yellowstone National Park Sound Library (https://www.nps.gov/yell/learn/photosmultimedia/sounds-elk.htm)", "category": null, "creator": { "name": "NPS & MSU Acoustic Atlas/Jennifer Jerrett", "url": null }, "credit": "NPS & MSU Acoustic Atlas/Jennifer Jerrett", "date_created": "2016-09-13", "description": "Several bull elk bugle from the shores of Yellowstone Lake during the fall rut", "download_url": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-YELLLakeElkRut20160913T004ms1.mp3", "download_urls": { "mp3": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-YELLLakeElkRut20160913T004ms1.mp3" }, "duration_seconds": null, "formats": [ "mp3" ], "id": "yell/learn/photosmultimedia/sounds-elk#1", "library": "yellowstone", "license": { "attribution_required": false, "code": "public-domain", "commercial_use": true, "name": "Public domain (stated by the National Park Service)", "note": "NPS asks that you credit the National Park Service, or the credit shown, where appropriate. The credit names NPS & MSU Acoustic Atlas/Jennifer Jerrett; check that party's rights before commercial reuse.", "restricted": false, "url": "https://www.nps.gov/yell/learn/photosmultimedia/soundlibrary.htm" }, "page_url": "https://www.nps.gov/yell/learn/photosmultimedia/sounds-elk.htm", "park": "Yellowstone National Park", "preview_url": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-YELLLakeElkRut20160913T004ms1.mp3", "sample_rate": null, "title": "Bull Elk Bugling", "transcript": "[Bull elk bugling]" }, { "attribution": "\"Bull Elk Bugling Two\" by NPS & MSU Acoustic Atlas/Jennifer Jerrett, public domain, via Yellowstone National Park Sound Library (https://www.nps.gov/yell/learn/photosmultimedia/sounds-elk.htm)", "category": null, "creator": { "name": "NPS & MSU Acoustic Atlas/Jennifer Jerrett", "url": null }, "credit": "NPS & MSU Acoustic Atlas/Jennifer Jerrett", "date_created": "2016-09-12", "description": "Several bull elk bugle from the shores of Yellowstone Lake during the fall rut", "download_url": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-YELLLakeElkRut20160912T15ms.mp3", "download_urls": { "mp3": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-YELLLakeElkRut20160912T15ms.mp3" }, "duration_seconds": null, "formats": [ "mp3" ], "id": "yell/learn/photosmultimedia/sounds-elk#2", "library": "yellowstone", "license": { "attribution_required": false, "code": "public-domain", "commercial_use": true, "name": "Public domain (stated by the National Park Service)", "note": "NPS asks that you credit the National Park Service, or the credit shown, where appropriate. The credit names NPS & MSU Acoustic Atlas/Jennifer Jerrett; check that party's rights before commercial reuse.", "restricted": false, "url": "https://www.nps.gov/yell/learn/photosmultimedia/soundlibrary.htm" }, "page_url": "https://www.nps.gov/yell/learn/photosmultimedia/sounds-elk.htm", "park": "Yellowstone National Park", "preview_url": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-YELLLakeElkRut20160912T15ms.mp3", "sample_rate": null, "title": "Bull Elk Bugling Two", "transcript": "[Bull elk bugling]" }, { "attribution": "\"Male Elk Bugling Near Grazing Females\" by NPS/Jennifer Jerrett, public domain, via Yellowstone National Park Sound Library (https://www.nps.gov/yell/learn/photosmultimedia/sounds-elk.htm)", "category": null, "creator": { "name": "NPS/Jennifer Jerrett", "url": null }, "credit": "NPS/Jennifer Jerrett", "date_created": "2015-10-18", "description": "Around the housing area of Mammoth Hot Springs, a bull (male) elk calls and responds to other males while he keeps close tabs on a group of grazing females.", "download_url": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-YELLElkBullandCows20151018T012.mp3", "download_urls": { "mp3": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-YELLElkBullandCows20151018T012.mp3" }, "duration_seconds": null, "formats": [ "mp3" ], "id": "yell/learn/photosmultimedia/sounds-elk#3", "library": "yellowstone", "license": { "attribution_required": false, "code": "public-domain", "commercial_use": true, "name": "Public domain (stated by the National Park Service)", "note": "NPS asks that you credit the National Park Service, or the credit shown, where appropriate.", "restricted": false, "url": "https://www.nps.gov/yell/learn/photosmultimedia/soundlibrary.htm" }, "page_url": "https://www.nps.gov/yell/learn/photosmultimedia/sounds-elk.htm", "park": "Yellowstone National Park", "preview_url": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-YELLElkBullandCows20151018T012.mp3", "sample_rate": null, "title": "Male Elk Bugling Near Grazing Females", "transcript": "[Bull elk bugling] [Chewing grass]" }, { "attribution": "\"Elk Chorus\" by NPS/Jennifer Jerrett, public domain, via Yellowstone National Park Sound Library (https://www.nps.gov/yell/learn/photosmultimedia/sounds-elk.htm)", "category": null, "creator": { "name": "NPS/Jennifer Jerrett", "url": null }, "credit": "NPS/Jennifer Jerrett", "date_created": "2015-09-23", "description": "Each year, Mammoth Hot Springs fills with elk (Cervus elaphus) that congregate for the annual breeding season. Listen carefully to this recording: Along with the screechy calls of Great horned owls (Bubo virginianus), you'll hear several bull elk calling to each other, their distinctive bugles ringing out of the crisp, autumn night.", "download_url": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-YELLElkChorus150922T04ms01.mp3", "download_urls": { "mp3": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-YELLElkChorus150922T04ms01.mp3" }, "duration_seconds": null, "formats": [ "mp3" ], "id": "yell/learn/photosmultimedia/sounds-elk#4", "library": "yellowstone", "license": { "attribution_required": false, "code": "public-domain", "commercial_use": true, "name": "Public domain (stated by the National Park Service)", "note": "NPS asks that you credit the National Park Service, or the credit shown, where appropriate.", "restricted": false, "url": "https://www.nps.gov/yell/learn/photosmultimedia/soundlibrary.htm" }, "page_url": "https://www.nps.gov/yell/learn/photosmultimedia/sounds-elk.htm", "park": "Yellowstone National Park", "preview_url": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-YELLElkChorus150922T04ms01.mp3", "sample_rate": null, "title": "Elk Chorus", "transcript": "[Several bull elk bugling]" }, { "attribution": "\"Elk Bugle One\" by NPS/Neal Herbert, public domain, via Yellowstone National Park Sound Library (https://www.nps.gov/yell/learn/photosmultimedia/sounds-elk.htm)", "category": null, "creator": { "name": "NPS/Neal Herbert", "url": null }, "credit": "NPS/Neal Herbert", "date_created": "2013-10-16", "description": "It's a fall morning at Mammoth Hot Springs. As an elk harem browses near Officer's Row, a bull elk announces his availability and fitness to the group with a healthy bugle.", "download_url": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-ElkBugle1.mp3", "download_urls": { "mp3": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-ElkBugle1.mp3" }, "duration_seconds": null, "formats": [ "mp3" ], "id": "yell/learn/photosmultimedia/sounds-elk#5", "library": "yellowstone", "license": { "attribution_required": false, "code": "public-domain", "commercial_use": true, "name": "Public domain (stated by the National Park Service)", "note": "NPS asks that you credit the National Park Service, or the credit shown, where appropriate.", "restricted": false, "url": "https://www.nps.gov/yell/learn/photosmultimedia/soundlibrary.htm" }, "page_url": "https://www.nps.gov/yell/learn/photosmultimedia/sounds-elk.htm", "park": "Yellowstone National Park", "preview_url": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-ElkBugle1.mp3", "sample_rate": null, "title": "Elk Bugle One", "transcript": "[Bull elk bugling]" }, { "attribution": "\"Elk Bugle Two\" by NPS/Neal Herbert, public domain, via Yellowstone National Park Sound Library (https://www.nps.gov/yell/learn/photosmultimedia/sounds-elk.htm)", "category": null, "creator": { "name": "NPS/Neal Herbert", "url": null }, "credit": "NPS/Neal Herbert", "date_created": "2013-10-23", "description": "A bull elk bugles as he walks past the houses along Officer's Row in Mammoth Hot Springs.", "download_url": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-ElkBugle2.mp3", "download_urls": { "mp3": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-ElkBugle2.mp3" }, "duration_seconds": null, "formats": [ "mp3" ], "id": "yell/learn/photosmultimedia/sounds-elk#6", "library": "yellowstone", "license": { "attribution_required": false, "code": "public-domain", "commercial_use": true, "name": "Public domain (stated by the National Park Service)", "note": "NPS asks that you credit the National Park Service, or the credit shown, where appropriate.", "restricted": false, "url": "https://www.nps.gov/yell/learn/photosmultimedia/soundlibrary.htm" }, "page_url": "https://www.nps.gov/yell/learn/photosmultimedia/sounds-elk.htm", "park": "Yellowstone National Park", "preview_url": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-ElkBugle2.mp3", "sample_rate": null, "title": "Elk Bugle Two", "transcript": "[Bull elk bugling]" }, { "attribution": "\"Elk Calf\" by NPS / Shan Burson, public domain, via Yellowstone National Park Sound Library (https://www.nps.gov/yell/learn/photosmultimedia/sounds-elk.htm)", "category": null, "creator": { "name": "NPS / Shan Burson", "url": null }, "credit": "NPS / Shan Burson", "date_created": "2005-11-16", "description": "An elk calf calls out. Calves are born between May and June and often stay close to their mothers throughout their first year.", "download_url": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-YELLMJ23ElkCalf20051116.mp3", "download_urls": { "mp3": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-YELLMJ23ElkCalf20051116.mp3" }, "duration_seconds": null, "formats": [ "mp3" ], "id": "yell/learn/photosmultimedia/sounds-elk#7", "library": "yellowstone", "license": { "attribution_required": false, "code": "public-domain", "commercial_use": true, "name": "Public domain (stated by the National Park Service)", "note": "NPS asks that you credit the National Park Service, or the credit shown, where appropriate.", "restricted": false, "url": "https://www.nps.gov/yell/learn/photosmultimedia/soundlibrary.htm" }, "page_url": "https://www.nps.gov/yell/learn/photosmultimedia/sounds-elk.htm", "park": "Yellowstone National Park", "preview_url": "https://www.nps.gov/nps-audiovideo/legacy/mp3/imr/avElement/yell-YELLMJ23ElkCalf20051116.mp3", "sample_rate": null, "title": "Elk Calf", "transcript": "[Elk calf calling]" } ], "source_urls": [ "https://www.nps.gov/subjects/sound/gallery.htm", "https://www.nps.gov/yell/learn/photosmultimedia/soundlibrary.htm", "https://www.nps.gov/romo/learn/photosmultimedia/soundlibrary.htm", "https://www.nps.gov/glba/learn/nature/glacier-bay-soundscape.htm" ], "total": 2 } ```