{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,14]],"date-time":"2026-04-14T10:57:23Z","timestamp":1776164243232,"version":"3.50.1"},"reference-count":26,"publisher":"Pensoft Publishers","license":[{"start":{"date-parts":[[2026,4,14]],"date-time":"2026-04-14T00:00:00Z","timestamp":1776124800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["BDJ"],"abstract":"\n This article presents the results of a study on the shape and composition of Cinereous vulture (\n Aegypius monachus<\/jats:italic>\n ) pellets. A total of 501 pellets were collected during two different seasons \u2013 125 on 24 September 2025 and 376 on 10 March 2025. The birds from which the materials were collected were raised in a closed adaptation aviary near the town of Madzharovo and were fed with the carcasses of various domestic animals - Karakachan sheep (\n Ovis aries<\/jats:italic>\n ), horses (\n Equus ferus caballus<\/jats:italic>\n ), Native Bulgarian goat (\n Capra hircus<\/jats:italic>\n ), Shorthorn Rhodopian Cattle (\n Bos taurus<\/jats:italic>\n ), Bulgarian Gray Cattle, Bulgarian Black and White Cattle, European Bison (\n Bison bonasus<\/jats:italic>\n ) and domestic pigs (\n Sus domesticus<\/jats:italic>\n ). The study reveals the shape and composition of each of the pellets during the two collection periods and the results aim to highlight the similarity between them and the existence of a common type of pellet for the Cinereous vulture. This study also aims to determine what part of the food composition remains in the pellet after the carcass has been processed. After analysis, two types of residue were found in them - nutritional and non-nutritional. The nutritional residues consisted of fur and skin - as the highest percentage, stomach contents, bones, hooves, horns and feathers from vultures, while the non-nutritional residues consisted mainly of stones and sticks - as the most significant percentage, leaves, construction foam and plastic (sisal and cord).\n <\/jats:p>","DOI":"10.3897\/bdj.14.e184922","type":"journal-article","created":{"date-parts":[[2026,4,14]],"date-time":"2026-04-14T09:45:29Z","timestamp":1776159929000},"source":"Crossref","is-referenced-by-count":0,"title":["Structure and composition of prey remains of Cinereous Vultures (Aegypius monachus) from an adaptation aviary in Bulgaria"],"prefix":"10.3897","volume":"14","author":[{"given":"Rusko","family":"Petrov","sequence":"first","affiliation":[{"name":"Trakia University, Stara Zagora, Bulgaria"},{"name":"Green Balkans - Stara Zagora NGO, Stara Zagora, Bulgaria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Monika","family":"Razhdanova","sequence":"additional","affiliation":[{"name":"Trakia University, Stara Zagora, Bulgaria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Angelina","family":"Yaneva","sequence":"additional","affiliation":[{"name":"Trakia University, Stara Zagora, Bulgaria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anton","family":"Stamenov","sequence":"additional","affiliation":[{"name":"Bulgarian Society for the Protection of Birds, Sofia, Bulgaria"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2258","published-online":{"date-parts":[[2026,4,14]]},"reference":[{"key":"184922_B13801325","article-title":"European Species Action Plan for the conservation of the Cinereous Vulture Aegypius monachus (2018-2028)","author":"Andevski"},{"issue":"2","key":"184922_B13799997","first-page":"30","article-title":"Domingues birds of prey pellet analysis: Morphometry and consumption interval of captive Accipitridae species","volume":"31","author":"Barbosa","year":"2021","journal-title":"Ci\u00eancia Animal"},{"key":"184922_B13801198","article-title":"Species factsheet: Cinereous Vulture Aegypius monachus","author":"International"},{"key":"184922_B13801527","author":"Botha","year":"2017","journal-title":"Multi-species Action Plan to Conserve African-Eurasian Vultures"},{"key":"184922_B13801545","doi-asserted-by":"publisher","DOI":"10.2307\/3801734"},{"key":"184922_B13793199","first-page":"197","article-title":"The diet of black vulture Aegypius monachus in response to environmental changes in Extremadura (1970 - 2000)","volume":"54","author":"Costillo","year":"2007","journal-title":"Ardeola: revista ib\u00e9rica de ornitolog\u00eda"},{"key":"184922_B13799956","doi-asserted-by":"publisher","DOI":"10.5253\/078.095.0204"},{"key":"184922_B13801313","article-title":"Feasibility study for the reinforcement of the Cinereous vulture (Aegypius monachus) in Rhodope Mountains, Bulgaria","author":"Dobrev"},{"key":"184922_B13799924","doi-asserted-by":"publisher","DOI":"10.1017\/s0959270921000198"},{"key":"184922_B13800029","doi-asserted-by":"publisher","DOI":"10.1017\/s0959270915000155"},{"key":"184922_B13801554","doi-asserted-by":"publisher","DOI":"10.1656\/058.021.0102"},{"key":"184922_B13799900","doi-asserted-by":"publisher","DOI":"10.3897\/bdj.11.e100521"},{"key":"184922_B13799891","doi-asserted-by":"publisher","DOI":"10.5253\/arde.v105i2.a3"},{"key":"184922_B13799882","doi-asserted-by":"publisher","DOI":"10.1676\/05-095.1"},{"key":"184922_B13799862","doi-asserted-by":"publisher","DOI":"10.2478\/orhu-2020-0021"},{"key":"184922_B13799974","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0020248"},{"key":"184922_B13801454","article-title":"New observations and nesting of the Black Vulture (Aegypius monachus. 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