The Tundra publishing house ( plans to publish this work in a very short time, so some photographs are urgently needed to complete species that are not fully represented with images. If you have or know where to find some of these photographs, they would be very welcome:


  • Ardea purpurea
  • Wing 2nd year
  • Ixobrychus minutus
  • wing of 2nd year female
  • Elanus caeruleus
  • Wing 2nd year
  • Aquila chrysaetos
  • Wing and tail 3rd year autumn-4th year spring
  • Wing and tail 4th year autumn-5th year spring
  • Hieraaetus pennatus
  • Wing 3rd year spring
  • Falco subbuteo
  • Wing 3rd year
  • Perdix perdix
  • Wing and tail of postjuvenile bird
  • Wing and tail of juvenile bird
  • Glareola pratincola
  • Breast, upperparts, wing and tail of juvenile
  • Charadrius morinellus
  • wing of 2nd year and adult spring
  • Himantopus himantopus
  • Wing 2nd year male
  • Wing 2nd year female
  • Calidris pugnax
  • Wing and tail of 2nd year spring
  • Calidris alpina
  • Wing and tail of adult spring
  • Wing and tail of 2nd year spring
  • Calidris minuta
  • Wing and tail of 2nd year spring
  • Tringa erythropus
  • Wing and tail of 2nd year spring
  • Tringa nebularia
  • Wing of 2nd year spring
  • Columba oenas
  • Wing of adult with supended moult
  • Strix aluco
  • Wing and tail 4th year autumn-5th year spring
  • Apus apus
  • Wing 3rd year
  • Locustella luscinioides
  • Wing, tail and head of juvenile
  • Turdus torquatus
  • Wing, tail and breast of juvenile
  • Monticola solitarius
  • Wing and tail of postjuvenile female
  • Saxicola rubetra
  • Breast, upperparts, wing and tail of juvenile (before the moult)
  • Phylloscopus sibilatrix
  • Wing and tail of adult in autumn

You are visiting Javier Blasco-Zumeta’s site. I am old enough to have had the time to do a few things, and I would like to share three with you.


That an image is worth a thousand words is an old and well-known maxim which is true or not depending on the actual means and ends. One example is this page, where the photographs set out to be worth more than the sometimes tedious descriptions of the characters that reveal the sex and age of birds.

  Being a bird ringer, I can catch birds and photograph them before releasing them, and it is bird ringers that this site is intended for in the first place. However, I have avoided technical terms as far as possible, so that the information can reach a wider public, and for such specific terms as have proved unavoidable there is the glossary.

  As you can see, this project is still under construction: I shall gradually add further species and complete the unfinished sections as I get the necessary photographs. You can know about recent changes clicking here. In any case, I shall welcome any comments, correction of mistakes and suggestions that might improve the site.

During my email-correspondences I met Gerd-Michael Heinze some years ago, an enthusiastic ornithologist, feather expert and “adult male” from northern Germany. Since our first contact in 2006 we’re working together in sexing, ageing and determining the bird’s plumages nearly each day via “hotline”. In consequence of this intensive partnership Gerd is the Co-author of the Atlas. Also he is old enough to have had the time to do few things.

  Such a large scale project as this cannot be done singlehanded. As a matter of fact, I am lucky enough to have a lot of friends who are helping me and to whom I am very grateful. Much as I woul like to, I do not know everything, so I am also using some bibliography.



It is a new project that consists of locating and photographing the details of the more than 800 species of plants and thousands of animals that have been cited in my region. For each species, its description is discussed, the keys that make its determination possible, its differences with nearby species, its associated fauna (in plants) or on feeding and reproduction (in animals), as well as a section on curiosities. Anyway, if you’re interested you can enter and browse



  An international multidisciplinary team has been working for several years on the inventory of the fauna and flora of the Juniperus thurifera forest of La Retuerta de Pina (Pina de Ebro, Zaragoza) which represents, by extension, the existing one in the Depression of Ebro steppes. The results of this work are offered for consultation in a compilation made in 2004 for the Diputación General de Aragón: since then it has been forgotten in the administration drawers and in mine.


  The joy I get from learning is enough of a reward for me, and therefore I do not mind if any part of this site is reproduced, stored in an electronic format or transmitted in any way or by any means, be it electronic or mechanical, be it by photocopying or by any other method, either invented or yet to be invented. What is more: in order for this great effort to be as useful as possible to as many people as possible, I do not merely accept, but also recommend, that such actions be taken, and I just do not care if the author is acknowledged or not.