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      Re-introduction of the Saker Falcon ( Falco cherrug ) in Bulgaria - preliminary results from the ongoing establishment phase by 2020

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          Abstract

          Considered extinct as breeding species in the early 2000s, the Saker Falcon was recovered when the first active nest from the new history of the species in Bulgaria was discovered in 2018, formed of two birds that were re-introduced back in 2015. Currently, there is only one confirmed wild breeding pair in the country - the male from 2015 with a female changed in 2020, released again as a part of the programme, in 2016. This is a report on the preliminary results and analysis of the ongoing establishment phase of the re-introduction of the Saker Falcon ( Falco cherrug ) in Bulgaria - first ever performed for this species in the country and globally. The period studied is 2015-2020. Following the re-introduction activities started in 2011, the current phase is defined by standardised methodology and a unified approach. Analysed and presented are methods for captive breeding and hacking, the breeding performance of the falcons, the number of released individuals, data from the post-fledging dependence period and a model of population growth.

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          Most cited references 48

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          Directions in reintroduction biology.

          Reintroductions are attempts to return species to parts of their historical ranges where they were extirpated, and might involve release of either captive-bred or wild-caught individuals. The poor success rate of reintroductions worldwide has led to frequent calls for greater monitoring, and since 1990 there has been an exponential increase in the number of peer-reviewed publications related to reintroduction. However, these publications have largely been descriptive accounts or have addressed questions retrospectively based on the available data. Here, we advocate a more strategic approach where research and monitoring targets questions that are identified a priori. We propose ten key questions for reintroduction biology, with different questions focusing at the population, metapopulation and ecosystem level. We explain the conceptual framework behind each question, provide suggestions for the best methods to address them, and identify links with the related disciplines of restoration ecology and invasion biology. We conclude by showing how the framework of questions can be used to encourage a more integrated approach to reintroduction biology.
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            Post-fledging dependence period and development of flight and hunting behaviour in the Red KiteMilvus milvus

             J Bustamante (2009)
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              SETTING HARNESS SIZES AND OTHER MARKING TECHNIQUES FOR A FALCON WITH STRONG SEXUAL DIMORPHISM

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                Author and article information

                Contributors
                Journal
                Biodivers Data J
                Biodivers Data J
                1
                urn:lsid:arphahub.com:pub:F9B2E808-C883-5F47-B276-6D62129E4FF4
                urn:lsid:zoobank.org:pub:245B00E9-BFE5-4B4F-B76E-15C30BA74C02
                Biodiversity Data Journal
                Pensoft Publishers
                1314-2836
                1314-2828
                2021
                20 April 2021
                : 9
                Affiliations
                [1 ] Trakia University, Stara Zagora, Bulgaria Trakia University Stara Zagora Bulgaria
                [2 ] Green Balkans - Stara Zagora NGO, Stara Zagora, Bulgaria Green Balkans - Stara Zagora NGO Stara Zagora Bulgaria
                [3 ] Reneco International Wildlife Consultants, Abu Dhabi, United Arab Emirates Reneco International Wildlife Consultants Abu Dhabi United Arab Emirates
                Author notes
                Corresponding author: Ivanka Lazarova ( i_asenova_lazarova@ 123456abv.bg ).

                Academic editor: Emilian Stoynov

                Article
                63729 15714
                10.3897/BDJ.9.e63729
                8079344
                Ivanka Lazarova, Rusko Petrov, Yana Andonova, Ivaylo Klisurov, Andrew Dixon

                This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                Page count
                Figures: 3, Tables: 3, References: 45
                Categories
                Research Article

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