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This webpage is supported by several individuals and organizations. Some have helped to expand the bibliography and to increase my collection of  Swift-papers, others have revised texts in English or devoted time and energy to webmastering the site.
  • Ariel Brosh, Israel

He was a genius in computer works and he created the first version of this homepage in 1997. He guided me and showed me his part of the world. He was a brilliant thinker, a faithful friend and a warm hearted person. He experienced the hardships of Israel. He died in 2002 at the age of 28

  • Der Falke

  • Charles T. Collins, U.S.A. & Michael M. Tarburton, Australia
  • Schweizerische Vogelwarte, CH-6204 Sempach, Switzerland


  • Lëtzeburger Natur - a Vulleschutzliga, L. N. V. L., BP 709 
    Luxembourg 2017


He was born in Berlin in 1910 and enlisted 1928 in zoology and human medicine in Humboldt University in Berlin. He immigrated to Palestine in 1933 and wrote a thesis on the “Population density of Birds in Israel” in 1940. He was the founder of modern zoology in Israel and became the most important zoologist in the Middle East. He helped build the university in Tel Aviv and taught there until the year 2000.

I met him in that same year and earned his cooperation for APUSlife. He also became a sponsor of the Common Swift website and we planned the common project “Common Swifts at the Wailing Wall” which was done in 2002. Prof. Mendelssohn passed away in 2002 at the age of 92.


  • Edward Mayer, UK

  • Gerald Driessens, Belgium

  • Jake Allsop, UK

  • Adrian Skerrett, Seychelles


Commonswift Worldwide © Ulrich Tigges

Apus apus, Swifts, Commonswift, gierzwaluw, vencejo comun, sis hachomot, סיס החומות, Црна чиопа, Kara Sağan, Čiopa, ciopa, chyorny strizh, Gierzwaluw (Apus apus), Vencejo común, Черный Стриж, Martinet noir, Rondone comune, rondoni, åtactara, السمامة, Mauersegler, Apuslife

Commonswift's topography, togography of the Commonswift, feathers, crown, eye line, eye patch, forecrown, lore, chin, throat, ear coverts, hindneck, mantle, scapulars, rump, uppertail coverts, tail, tertials, greater coverts, secondaries, median coverts, leading edge coverts, lesser coverts, lesser primary coverts, alula, median primary coverts, leading edge coverts, greater primary coverts, primaries, median coverts, greater coverts, secondaries, axillaries, undertail, undertail coverts, rear flank, vent, flank, belly, brest, apodidae, apodiformes, size, color, colour, weight, sex, flight acquaintance, flight speed, age, food, enemies, pair bonding, nest, eggs, egg, young, bad weather, voice, download wave file, survive, survival, colony, flying insects



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