• Boris Belchev – http://www.alcedowildlife.com/
• Valeri Hristov - http://www.taurus13.net/
• Vladimir Stoyanov - http://vstoyanov.com/
• Dobromir Dobrinov - http://www.greenbalkans.org/ and http://www.birdsinbulgaria.org/
• Evgeniy Dakov - http://www.wildlifeinbulgaria.com/
• Emil Enchev - http://www.cometobg.com/and http://www.birdsinbulgaria.org/
• Ivaylo Zafirov - http://www.wildlifephotos.eu/ and http://www.birdsinbulgaria.org/
• Liubomila Krivoshieva - http://photo-forum.net/falconess
• Liubomir Andreev - http://www.wildlifevideos.eu/
• Nikolay Staykov - http://birdsphotographer.com/ and http://www.birdsinbulgaria.org/
• Minko Mihaylov - http://www.minkomihaylov.com/
• Ognyan Todorov - http://rnhm.org/
• Hristo Nikolov - http://www.greenbalkans.org/
• Green Balkans’ archive