Costa Rica, December 2015

• Malaysia August-September 2023 [under construction] (141)
• Ecuador, February-March 2023 (137)
• Spain, November-December 2022 (48)
• Colombia, February-March 2022 (91)
• Ecuador, September-October 2021 (89)
• SE Brazil, October-November 2019 (125)
• Switzerland, May-June 2019 (46)
• Philippines, March-April 2019 (66)
• Madagascar, October 2018 (0)
• Mammals of Madagascar (24)
• Birds of Madagascar (60)
• Scenery of Madagascar (31)
• Ghana, March 2018 (42)
• Suriname, November-December 2017 (58)
• Cuba, March-April 2017 (0)
• Cuba - Birds (118)
• Cuba - Landscape & culture (98)
• Colombia, October 2016 (45)
• Oman, February 2016 (0)
• Birds of Oman (79)
• Raptors of Oman (64)
• United Arab Emirates, February 2016 (0)
• Birds of the UAE (40)
• Costa Rica, December 2015 (48)
• Sumatra, August 2015 (0)
• Kerinci Sablat NP (59)
• Simeulue Island (43)
• Gunung Leuser NP (31)
• China, November-December 2014 (58)
• Morocco, March 2014 (100)
• Cambodia, March 2013 (0)
• Angkor Wat (34)
• Tonle Sap/Prek Toal (40)
• Ang Trapaeng Thmor (15)
• Bengal Florican Reserve (21)
• Preah Vihear (33)
• Thailand, March 2013 (0)
• Pak Thale & Lampakbia (73)
• Kaeng Krachan National Park (48)
• Khao Yai National Park (36)
• Sweden, April 2012 (31)
• Ethiopia, February-March 2012 (0)
• Ethiopia: birds - (regional) endemics & specialties (38)
• Ethiopia: birds - miscellaneous (89)
• Ethiopia: mammals (14)
• Ethiopia: landscapes & birding sites (42)
• Ethiopia: people (37)
• Ethiopia: accommodations (10)
• Atlantic Odyssey 2011 (0)
• Tierra del Fuego (29)
• Antarctica (36)
• South Georgia (25)
• King Penguins (13)
• Gough (13)
• Tristan da Cunha (11)
• Inaccessible Island (12)
• Nightingale Island (4)
• St Helena (4)
• Ascension (36)
• Whales & dolphins (10)
• Cape Verde (28)
• Miscellaneous (3)
• Tenerife & Fuerteventura, December 2010 (66)
• Bay of Biscay, August 2010 (55)
• NE India, March 2010 (99)
• Peru, August-September 2009 (191)
• Spain, February 2009 (105)
• Eastern Turkey, May-June 2008 (0)
• Eastern Turkey - Landscape (22)
• Eastern Turkey - Birds (52)
• Georgia, May-June 2008 (24)
• Israel, March 2008 (42)
• Thailand, March 2007 (88)
• Mexico, September - December 2003 (40)
• Recent work from the Netherlands (42)
• Archive (0)
• Birds (0)
• 2021 (34)
• Little Bitterns 2021 (25)
• 2020 (117)
• 2019 (18)
• 2018 (60)
• 2017 (172)
• 2016 (52)
• 2015 (8)
• 2014 (26)
• 2013 (96)
• 2012 (0)
• October - December 2012 (0)
• Cory's Shearwater (16)
• July-September 2012 (57)
• April - June 2012 (49)
• January-March 2012 (44)
• 2011 (0)
• October-December 2011 (68)
• July-September 2011 (6)
• Groningen 16 July 2011 (14)
• May-June 2011 (20)
• January-March 2011 (55)
• 2010 (0)
• October-December 2010 (42)
• July - September 2010 (29)
• April-June 2010 (79)
• January-March 2010 (30)
• Little Bitterns 2010 (21)
• 2009 (0)
• January - March 2009 (30)
• April - June 2009 (0)
• Baillon's Crake (5)
• Spotted Crake (14)
• Zevenhuizen (12)
• Westhoek (9)
• Dougalls Tern (5)
• Breskens (28)
• July - September 2009 (10)
• October - December 2009 (19)
• 2008 (76)
• Little Bitterns - Ixobrychus minutus - Wouwaapjes (18)
• 2007 (9)
• 2006 (13)
• 2005 (12)
• Cinereous Vulture (3)
• Waxwings (5)
• 2004 (9)
• Ivory Gull (6)
• 2003 (49)
• Raptors of Holland (32)
• Mammals (46)
• bunker bat count (12)
• Butterflies & Moths (0)
• Butterflies (42)
• Moths (4)
• Nationale Nachtvlindernacht 2010 (95)
• Nationale Nachtvlindernacht 2008 (5)
• Nationale Nachtvlindernacht 2007 (18)
• Dragonflies & Damselflies (47)
• Turkey 2008 (35)
• Grasshoppers & Crickets (22)
• Fish (34)
• Amphibians & Reptiles (29)
• Plants (5)
• Orchids (84)
• Ferns (23)
• Miscellaneous (1)
• Vlieland October 2008 (44)
• Cap Gris Nez - 1 October 2008 (15)
• Lightning (34)
• Clouds (20)
• Dutch Landscape (0)
• Spring (6)
• Summer (6)
• Fall (15)
• Winter (29)
• Pictures taken from planes (27)
• Favorite (60)