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About
| OWNER |
Jesper Bay Jacobsen
- Copenhagen, Denmark.
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| CONTACT |
jbj@jesperbayjacobsen.com
+45 5216 9326 |
| THE WEBSITE |
Birds, Butterflies and Dragonflies. Mostly. And personal reflections about life. My nature interests can be summed up to field identification, species lists, taxonomy, photography and traveling. The birds are still mostly focused on Mexico, but since I'm not there anymore, the Danish birds are becoming more in focus each day. As are the butterflies and dragonflies which I've just started to dig into after I came back to Denmark. Being very enthusiastic about the Butts and Drags I'm intending to build a resource for others to benefit from, something like a personalized online guide, hopefully adding information that is not normally to be found in the standard field guides. Of course it's a long term project, which will grow progressively as I gain more experience and knowledge. Here Oct 2022, I'm on my second year only, why there's way to go still. |
| HOW IT STARTED |
I'm born in 1966 but didn't start birdwatching until 1987 which is late compared to most of the brighter stars on the avian firmament. And it was a very hesitant start. Being negative and skeptic about many things in those years my first encounter with the birding world was no exception. My family shared a summer residence in Sweden with 4 other families; my father's colleague being one of them. And he was a birdwatcher. And when we went shopping we would drive through the landscape, and he would start like this: ”Look, that's a Buzzard sitting on that post”. And later: “That was a Red Kite flying behind the trees, and those are Ravens...” For a long time I just ignored it as useless boring information, and we would drive on with no further comments on my part. But during the years he would continue, and I came to a point when it irritated me that he made his statements with such confidence and enthusiasm. “Don't fool me you old hippie!” And I started questioning him with a very skeptical expression on my face, trying to show as much mistrust as possible! As if anybody would be able to identify a bird sitting 100 meters away while driving at 80 km/h. HA! Of course my bad intentions of exposing him as a fraudulent bragger didn't bare fruit. He started explaining the details and differences, and crosschecking with his bird guides I understood that what he said was true. Denied a successful result to my bad-mannered attack, I had to accept that there was a world of challenging feathers out there that I did not master nor knew of. And even more irritating: It fascinated me! From there on it started little by little, and with a few breaks in the earlier years my birding interest has just kept growing. During these years I have been birding most countries in Europe as well as Israel, Turkey, Tunisia, China, India, Gambia, USA, Canada and Mexico. In 1988 I visited Mexico the first time. I'm still not completely sure why I felt attracted to this strange country so far away. One reason, though, why I made my decision was that my high school friends who also decided to travel far in those years all headed in the other direction out of Denmark, toward the Far East. The classical naive hippie illusion as I saw it. I needed to manifest my disapproval, so I turned the map upside down, and it pointed toward Mexico. The Mexican landscapes though, have always been a great attraction to me, I see that today, and in those years the Pre-Hispanic cultures probably as well, since I visited all the important ruin sites during that trip. Being a very newborn birder I still didn't understand the concept that well and the talking about species list and lifers didn't affect me at all. So when it was time to pack my bag I did it with the intention to travel light, so I felt I had to choose between binoculars or my camera to minimize the weight. And since photography was still more interesting to me than watching birds I opted for the camera. A disaster from a birding point of view it turned out, since I, after going back to Denmark, didn't have a clue about any birds I had seen during the 3 months I traveled through the region other than from two photos I took. A California Gull in LA, and an Ocellated Turkey in Tikal in Guatemala. Tragic! Not a single feather from Mexico, and as my birding interest grew stronger over the years, the frustration did too. So close to so many attractive species, and nothing. I had to go back! With patience we all shall die, and finally 18 years later in 2006 the world re-arranged itself allowing me to once again set foot on this faraway land that during all these years had been slumbering in my heart as a forgotten attraction. So on the 6th of January I could make my first Mexican records: It was in Aguascalientes on a freezing cold morning, and I was thrilled to see Inca and White-winged Doves together with Clay-colored Sparrows and, as it has turned out later, a rare Green-tailed Towhee and scarce White-crowned Sparrows. I loved it, and have done so ever since. |
| COPYRIGHT |
All rights reserved. The material on this website can only be used commercially or publically according to previous agreement.
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| COOKIES AND JAVASCRIPT |
Cookies and javascript must be allowed for the page to work. Only using cookies for website functionality. The website is only optimized for desktop and laptop. |
| LANGUAGES |
Danish because I'm Danish, English because it is unavoidable and Spanish because Mexico used to be my new home. But the site is no longer maintained in all three languages, only English, except for the species names. However, Danish and Spanish might still appear as my mood and inspiration dictate it.
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| PHOTOS |
All photos are taken by me, unless mentioned otherwise in the comment field of the picture.The few pictures dated before October 2007, have been taken with a Nikon Coolpix 4500 and as handheld 'digiscoping', if speaking of bird pictures.Photos dated between October 2007 and March 2015 have all been taken using a Canon 40D + 400mm f/5.6 or 17-40 4.0 L. Have bought Canon 7D Mark II in March 2015, and all pictures from that day will be taken with this camera. While doing a short trip to Belize at the beginning of December 2018, my 400mm lens simply fell apart while watching a beautiful double rainbow glowing over Bird's Eye View Lodge in Crooked Tree. I might try to have it repaired one day, since it has been a perfect companion for a mobile birder taking photos, but after having regretted the incident for a short while, I decided to see it as positive signal to finally get a newer lens. And often doing handheld and monopod shooting I have long wanted to have a lens with stabilization, why I January 7th 2019 bought the 100-400 mm f/4.5-5.6L IS II USM. Realizing that I'm a birder with a camera and not a photographer shooting birds, I expect this lens to support my continued need for flexibility and mobility. |
| BUY PHOTOS |
If you have found a photo that you want to use, contact me by email, and we will work out a price and conditions.
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| TAXONOMY |
BIRDS: The taxonomy of birds and their English names follow the ebird/Clements taxonomy in latest edition (ebird/Clements (2023)). The Danish names follow the list produced by Navnegruppen under The Danish Ornithological Society. This list though, follows Sibley & Monroe, and therefore if mismatches occur, I will have to name the species from another source and will put a note on this with the species name. The Mexican bird names follow ebird.org (because these seem to be adopted directly from the major Mexican resources). Spanish names for bird species not relevant to Mexico, will be found in ebird, or if also failing here, using Wikipedia. BUTTERFLIES: English butterfly names for Mexican species follow "A Swift guide to Butterflies of Mexico and Central America" by J. Glassberg (2017 second edition). European butterfly names follow: "Collins Butterfly Guide" by Tom Tolman & Richard Lewington (2009). English dragonfly names follow: "Europe's dragonflies" by Dave Smallshire and Andy Swash (2020). Danish butterfly and dragonfly names follow: naturbasen.dk. Spanish names to any Mexican species other than birds follow naturalista.mx. Other Spanish names will be found using wikipedia.org or Spanish online resources like Associación ZERYNTHIA or Nombres vernáculos... DRAGONFLIES: Overall the taxonomy is based on the world list presented by ODONATA CENTRAL, a citizen science project with a N American focus. The list is based on the work lead by Puget Sound Museum of Natural History under the University of Puget Sound. Confusingly, however, it appears that the order at family level is not synchronized between the two, and I will have to dig deeper into the lists to see if there are more discrepancies also at species level for example. Names on this website follow the relevant resources listed under Literature and Resources. I intent to let common English names follow a principle of 'home precedence', meaning that species that are widely distributed, like Lestes dryas which is present in both the old and new world, will be given the main name that is commonly used closer to where I live (Denmark). Alternative names will be listed as synonyms under the species accounts. I know it will result in a 'zigzag'-naming style, some aeshna species for example being called darners and others hawkers. If it looks to ugly and is too confusing, I'll change the names back to be consistent worldwide, but right now I think it could be of benefit, adding this extra information into the name directly. An American seeing a hawker name of a home familiar species, aeshna juncea, will know right away, that the species is also present in Europe. To me, still being an upstarter this is good information! |
| LITERATURE AND RESOURCES |
Resources used for information about butterflies and dragonflies on this website.
BUTTERFLIES:
Nordens Fjärilar (2019)
Bo Söderström
Collins Butterfly Guide (2009)
Tom Tolman and Richard Lewington
Danmarks Sommerfugle (2009)
Morten Top-Jensen & Michael Fibiger
Butterflies of Mexico and Central America edi.2 (2018)
Jeffrey Glassberg
DRAGONFLIES:
De danske guldsmede (1998)
Ole Fogh Nielsen
Nordens Trollsländor (2019 and 2023)
Magnus Billqvist
Field Guide to the Dragonflies of Britain and Europe edi.2 (2020)
Dijkstra, Schröter and Lewington
Europe's Dragonflies (2020)
Dave Smallshire and Andy Swash
Dragonflies and Damselflies of the West (2009)
Dennis Paulson
Dragonflies and Damselflies of the East (2011)
Dennis Paulson
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| THE BIRDING PROGRAM |
The Birding Program is my own software where I keep my bird records. It used to be my dream to make a commercial version, but as the world grew accustomed to free online services, that perspective soon faded away. But I keep developing it, and also use it to create my reports and checklists. If you for some reason are still looking for the right software solution to serve your needs, you are welcome to have a test account opened to see if it would be useful to you.
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| WISH LIST |
Within the categories the titles are ordered alphabetically, to say that the one at the bottom is as much wanted as the one at the top. Except for the ones with a yellow flower after the title, which are always the most wanted.
Book shops (never use British Brexit-shops): https://www.naturbutiken.se/sv https://www.naturbutikken.dk/ WANTED MUCHO!
A Guide to the Dragonflies & Damselflies of South Africa
 Warwick Tarboton and Michèle Tarboton
ISBN: 9781775847007
Ageing & Sexing of Migratory East Asian Passerines
Gabriel Norevik(Author), Magnus Hellström(Author), Dongping Liu(Author), Bo Petersson(Author)
ISBN: 9789198516579
Atlas of the Dragonflies and Damselflies of West and Central Asia
Boudot et al.
Conservation of Dragonflies - Sentinels for Freshwater Conservation
Michael Samways
ISBN: 9781789248371
Dragonflies & Damselflies Model Organisms for Ecological and Evolutionary Research
Alex Córdoba-Aguilar, Christopher D Beatty and Jason T Bried
ISBN: 9780192898623 eller ISBN: 9780199567584
Dragonflies and Damselflies of Costa Rica
Dennis R Paulson and William A Haber
ISBN: 9781501713163
Dragonflies of North America
Ed Lam
ISBN: 9780691232874
Field Guide to North American Flycatchers: Empidonax and Pewees
Cin-Ty Lee(Author), Andrew Birch(Illustrator)
ISBN: 9780691240626
Noctuidae Europaeae
Morten Top, Dieter Fritsch, and Vladimir Kononenko Buy!
ISBN-13: 978-87-973804-0-6
Seabirds The New Identification Guide
Peter Harrison m.fl.
ISBN: 9788416728411
The Dragonflies and Damselflies of Eastern Africa
Klaas-Douwe B Dijkstra and Viola Clausnitzer
ISBN: 9789491615061
WANTED
A Field Guide to the Birds of Brazil
Ber van Perlo
ISBN-13: 9780195301540
A Birdwatchers' Guide to Cuba, Jamaica, Hispaniola, Puerto Rico and the Caymans
Guy Kirwan, Arturo Kirkconnell and Mike Flieg
ISBN-13: 9781871104127
A Guide to the Birds of Fiji and Western Polynesia
Dick Watling
ISBN: 9829030040
A Guide to the Birds of Nicaragua / Nicaragua - Una Guía de Aves
Juan Martínez-Sánchez
ISBN-13: 9783866171183
A Message from Martha
Mark Avery
ISBN-13: 9781472906274
African Raptors
William S Clark
ISBN-13: 9780713665383
Antpittas and Gnateaters
Harold Greeney
ISBN-13: 9781472919649
Bats of Colima, Mexico
Cornelio Sánchez-Hernández, María De Lourdes Romero-Almaraz, Gary D Schnell, Michael L Kennedy, Troy L Best, Robert D Owen, Sara B González-Pérez
ISBN: 9780806152165
Birding Northeast Ecuador
Steven L Herrmann
ISBN-13: 9781539089261
Birds of Aruba, Bonaire, and Curaçao: A Site and Field Guide
Jeffrey V Wells & Allison Childs Wells
ISBN-13: 9781501701078
Birds of Bhutan
Carol Inskipp, Tim Inskipp and Richard Grimmett
ISBN: 071366990X
Birds of Borneo
Susan Myers
ISBN-13: 9781472924445
Birds of Central Asia
Raffael Ayé
ISBN-13: 9780713670387
Birds of Costa Rica
Richard Garrigues
ISBN-13: 9781472916532
Birds of Cuba
Orlando H Garrido
ISBN: 0713657847
Birds of Eastern Polynesia: A Biogeographic Atlas
Jean-Claude Thibault(Author), Alice Cibois(Author)
ISBN-13: 9788416728053
Birds of Japan
Mark Brazil
ISBN-13: 9781472913869
Birds of Nepal
Richard Grimmett
ISBN-13: 9781472905710
Birds of Oman
Jens Eriksen(Author), Richard Porter(Author)
ISBN-13: 9781472937537
Birds of South America: Non-Passerines, Rheas to Woodpeckers
Francisco Erize
ISBN: 0691126887
Birds of the West Indies
Herbert Raffaele, James Wiley, Orlando Garrido, Allan Keith and Janis Raffaele
ISBN: 0713654198
Birds of Trinidad and Tobago
Martyn Kenefick, Robin Restall and Floyd Hayes
ISBN-13: 9781408152096
Birds of Venezuela
David Ascanio (Author), Gustavo Rodriguez (Author), Robin Restall (Author)
ISBN-13: 9781408105351
Birds of Vietnam
Richard C Craik and Lê Quý Minh
ISBN: 9788416728138 (hardback version)
Birdwatching in Colombia
Jürgen Beckers
ISBN-13: 9789090277851
Bovids of the World Antelopes, Gazelles, Cattle, Goats, Sheep, and Relatives
José R Castelló
ISBN: 9780691167176
Challenge Series: Autumn, Birding Frontiers Challenge Series Volume: 1
Martin Garner
ISBN-13: 9780992975708
Collins Field Guide to the Birds of South-East Asia
Norman Arlott
ISBN-13: 9780007429547
Cuckoos of the World
Johannes Erritzøe
ISBN-13: 9780713660340
Endemic Birds of Cuba
Nils Navarro
ISBN-13: 9780990941910
Feathers: Identification for Bird Conservation
Marian Cieslak
ISBN: 8392441001
Field Guide to the Birds of Colombia
Miles McMullan
ISBN-13: 9780982761557
Field Guide to the Birds of Machu Picchu and the Cusco Region, Peru
Barry Walker
ISBN-13: 9788496553972
Fieldbook of the Birds of Ecuador
Miles McMullan
ISBN-13: 9780982761533
Finding Australian Birds: A Field Guide to Birding Locations
ISBN-13: 9780643097667
Tim Dolby(Author), Rohan Clarke(Author)
Guide to Seabirds of Southern Africa
Peter G Ryan
ISBN-13: 9781775845195
Guide to the Birds of Honduras
Robert J Gallardo
ISBN-13: 9789992649978
Guide to the Manta & Devil Rays of the World
Guy Stevens, Daniel Fernando, Marc Dando, Giuseppe Notarbartolo di Sciara
ISBN: 9780995567399
Handbook of Avian Hybrids of the World
Eugene M McCarthy
ISBN: 0195183231
Identification Guide to Birds in the Hand
Laurent Demongin (Author), Hervé Lelièvre (Translated by), George Candelin (Translated by)
ISBN-13: 9782955501900
Identification Guide to European Passerines, 2nd edition
Lars Svensson
ISBN: 9163011182
Important Bird Areas of the Americas
BirdLife Conservation Series Volume: 16
ISBN-13: 9789942995902
Mexico: Trees / Árboles
Enrique Leal C, Ruth Rodríguez
ISBN: 9781888538663
Mexico: Tropical Fruit
Enrique Leal C
ISBN: 9780984010783
Moult, Ageing and Sexing of Finnish Owls / Suomen Pöllöjen Sulkasadon, Iän ja Sukupuolen Määritysopas
Heimo Mikkola
ISBN-13: 9789519826318
National Geographic Field Guide to the Birds of North America (7th edision)
Jon L Dunn(Author), Jonathan Alderfer(Author), Paul Lehman(Illustrator)
ISBN-13: 9781426218354
Nightjars of the World Potoos, Frogmouths, Oilbird and Owlet-nightjars
Nigel Cleere
ISBN: 9781903657072
North American Ducks, Geese and Swans: Identification Guide
Frank S Todd
ISBN-13: 9780888390936
Peterson Reference Guide to Owls of North America and the Caribbean
Scott Weidensaul
ISBN-13: 9780547840031
Peterson Reference Guide to Woodpeckers of North America
Stephen A Shunk
ISBN-13: 9780618739950
Terns of North America
Cameron Cox
ISBN: 9780691161877
The Birder's Guide to Africa
Michael Mills(Author), Tasso Leventis(Illustrator)
ISBN-13: 9780620717250
The Book of Eggs
Mark E Hauber
ISBN-13: 9781782400479
The Field Guide to the Birds of New Zealand
Barrie Heather
ISBN-13: 9780143570929
The Hand Guide to the Birds of New Zealand
Hugh Robertson
ISBN-13: 9780143570936
The Helm Guide to Bird Identification
Keith Vinicombe
ISBN-13: 9781408130353
The Helm Guide to Bird Identification: An In-Depth Look at Confusion Species
Keith Vinicombe (Author), Alan Harris (Illustrator), Laurel Tucker (Illustrator)
ISBN-13: 9781408130353
The New Birds of Kazakhstan
Arend Wassink
ISBN-13: 9789081146203
Vagrancy in Birds
Alexander Lees and James Gilroy
ISBN 9781472964786
Winter Birds
Lars Jonsson
ISBN-13: 9781472942814
Woodpeckers of the World
Gerard Gorman
ISBN-13: 9781408147153
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