Dusky crag martin (English Wikipedia)

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biologiezentrum.at

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Eaton, James. "Cambodia Oriental Bird Club fundraising tour 21st January – 2nd February 2007" (PDF). birdtourasia. Archived from the original (PDF) on 20 July 2011. Retrieved 7 April 2010

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Sheldon, Frederick H; Whittingham, Linda A; Moyle, Robert G; Slikas, Beth; Winkler, David W (2005). "Phylogeny of swallows (Aves: Hirundinidae) estimated from nuclear and mitochondrial DNA". Molecular Phylogenetics and Evolution. 35 (1): 254–270. doi:10.1016/j.ympev.2004.11.008. PMID 15737595.
Winkler, David W; Sheldon, Frederick H (1993). "Evolution of nest construction in swallows (Hirundinidae): a molecular phylogenetic perspective". Proceedings of the National Academy of Sciences USA. 90 (12): 5705–5707. Bibcode:1993PNAS...90.5705W. doi:10.1073/pnas.90.12.5705. PMC 46790. PMID 8516319.
Sharma, Satish Kumar (September 2003). "Nesting of Dusky Crag Martin Ptyonoprogne concolor Sykes on electric bulbs at Phulwari and Kumbhalgarh Wildlife Sanctuaries, Rajasthan". Zoos' Print Journal. 18 (10): 1236. doi:10.11609/JoTT.ZPJ.18.10.1236a.
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Sheldon, Frederick H; Whittingham, Linda A; Moyle, Robert G; Slikas, Beth; Winkler, David W (2005). "Phylogeny of swallows (Aves: Hirundinidae) estimated from nuclear and mitochondrial DNA". Molecular Phylogenetics and Evolution. 35 (1): 254–270. doi:10.1016/j.ympev.2004.11.008. PMID 15737595.
Winkler, David W; Sheldon, Frederick H (1993). "Evolution of nest construction in swallows (Hirundinidae): a molecular phylogenetic perspective". Proceedings of the National Academy of Sciences USA. 90 (12): 5705–5707. Bibcode:1993PNAS...90.5705W. doi:10.1073/pnas.90.12.5705. PMC 46790. PMID 8516319.

Evans, T D; Towll, H C; Timmins, R J; Thewlis, R M; Stones, A J; Robichaud, W G; Barzen J (2000). "Ornithological records from the lowlands of southern Laos during December 1995-September 1996, including areas on the Thai and Cambodian borders" (PDF). Forktail. 16: 29–52. Archived from the original (PDF) on 10 June 2011.
Shing, Lee Kwok; Wai-neng Lau, Michael; Fellowes, John R; Lok, Chan Bosco Pui (2006). "Forest bird fauna of South China: notes on current distribution and status" (PDF). Forktail. 22: 23–38. Archived from the original (PDF) on 10 June 2011.

"Martin Kelabu Dusky Crag Martin" (PDF). Bird list (in Malay). Department of wildlife and national parks, peninsular Malaysia. Archived from the original (PDF) on 7 January 2009. Retrieved 7 April 2010
Evans, T D; Towll, H C; Timmins, R J; Thewlis, R M; Stones, A J; Robichaud, W G; Barzen J (2000). "Ornithological records from the lowlands of southern Laos during December 1995-September 1996, including areas on the Thai and Cambodian borders" (PDF). Forktail. 16: 29–52. Archived from the original (PDF) on 10 June 2011.
Shing, Lee Kwok; Wai-neng Lau, Michael; Fellowes, John R; Lok, Chan Bosco Pui (2006). "Forest bird fauna of South China: notes on current distribution and status" (PDF). Forktail. 22: 23–38. Archived from the original (PDF) on 10 June 2011.
Eaton, James. "Cambodia Oriental Bird Club fundraising tour 21st January – 2nd February 2007" (PDF). birdtourasia. Archived from the original (PDF) on 20 July 2011. Retrieved 7 April 2010

"Martin Kelabu Dusky Crag Martin" (PDF). Bird list (in Malay). Department of wildlife and national parks, peninsular Malaysia. Archived from the original (PDF) on 7 January 2009. Retrieved 7 April 2010