Bauer, H.-G.: Falco cherrug Saker Falcon. In: European Breeding Bird Atlas 2: Distribution, Abundance and Change, S. 525 - 525 (Hg. Keller, V.; Herrando, S.; Voříšek, P.; Franch, M.; Kipson, M. et al.). European Bird Census Council & Lynx Edicions, Barcelona (2020)

Bauer, H.-G.: Hippolais olivetorum Olive-tree Warbler. In: European Breeding Bird Atlas 2: Distribution, Abundance and Change, S. 611 - 611 (Hg. Keller, V.; Herrando, S.; Voříšek, P.; Franch, M.; Kipson, M. et al.). European Bird Census Council & Lynx Edicions, Barcelona (2020)

Bauer, H.-G.: Iduna opaca Isabelline Warbler. In: European Breeding Bird Atlas 2: Distribution, Abundance and Change, S. 609 - 609 (Hg. Keller, V.; Herrando, S.; Voříšek, P.; Franch, M.; Kipson, M. et al.). European Bird Census Council & Lynx Edicions, Barcelona (2020)

Bauer, H.-G.: Iduna rama Sykes's Warbler. In: European Breeding Bird Atlas 2: Distribution, Abundance and Change, S. 607 - 607 (Hg. Keller, V.; Herrando, S.; Voříšek, P.; Franch, M.; Kipson, M. et al.). European Bird Census Council & Lynx Edicions, Barcelona (2020)

Bauer, H.-G.: Lonchura punctulata Scaly-breasted Munia. In: European Breeding Bird Atlas 2: Distribution, Abundance and Change, S. 783 - 783 (Hg. Keller, V.; Herrando, S.; Voříšek, P.; Franch, M.; Kipson, M. et al.). European Bird Census Council & Lynx Edicions, Barcelona (2020)

Bauer, H.-G.: Oenanthe finschii Finsch's Wheatear. In: European Breeding Bird Atlas 2: Distribution, Abundance and Change, S. 763 - 763 (Hg. Keller, V.; Herrando, S.; Voříšek, P.; Franch, M.; Kipson, M. et al.). European Bird Census Council & Lynx Edicions, Barcelona (2020)

Bauer, H.-G.: Oenanthe xanthoprymna Kurdish Wheatear. In: European Breeding Bird Atlas 2: Distribution, Abundance and Change, S. 753 - 753 (Hg. Keller, V.; Herrando, S.; Voříšek, P.; Franch, M.; Kipson, M. et al.). European Bird Census Council & Lynx Edicions, Barcelona (2020)

Bauer, H.-G.: Ploceus melanocephalus Black-headed Weaver. In: European Breeding Bird Atlas 2: Distribution, Abundance and Change, S. 780 - 780 (Hg. Keller, V.; Herrando, S.; Voříšek, P.; Franch, M.; Kipson, M. et al.). European Bird Census Council & Lynx Edicions, Barcelona (2020)

Bauer, H.-G.: Rhodopechys sanguineus Eurasian Crimson-winged Finch. In: European Breeding Bird Atlas 2: Distribution, Abundance and Change, S. 832 - 832 (Hg. Keller, V.; Herrando, S.; Voříšek, P.; Franch, M.; Kipson, M. et al.). European Bird Census Council & Lynx Edicions, Barcelona (2020)

Bauer, H.-G.: Rhodospiza obsoleta Eurasian Desert Finch. In: European Breeding Bird Atlas 2: Distribution, Abundance and Change, S. 835 - 835 (Hg. Keller, V.; Herrando, S.; Voříšek, P.; Franch, M.; Kipson, M. et al.). European Bird Census Council & Lynx Edicions, Barcelona (2020)

Bauer, H.-G.: Syrmaticus reevesii Reeves's Pheasant. In: European Breeding Bird Atlas 2: Distribution, Abundance and Change, S. 81 - 81 (Hg. Keller, V.; Herrando, S.; Voříšek, P.; Franch, M.; Kipson, M. et al.). European Bird Census Council & Lynx Edicions, Barcelona (2020)

Bauer, H.-G.: Threskiornis aethiopicus African Sacred Ibis. In: European Breeding Bird Atlas 2: Distribution, Abundance and Change, S. 252 - 252 (Hg. Keller, V.; Herrando, S.; Voříšek, P.; Franch, M.; Kipson, M. et al.). European Bird Census Council & Lynx Edicions, Barcelona (2020)

Bauer, H.-G.: Vidua macroura Pin-tailed Whydah. In: European Breeding Bird Atlas 2: Distribution, Abundance and Change, S. 783 - 783 (Hg. Keller, V.; Herrando, S.; Voříšek, P.; Franch, M.; Kipson, M. et al.). European Bird Census Council & Lynx Edicions, Barcelona (2020)

Bauer, H.-G.; Aghababyan, K.: Emberiza hortulana Ortolan Bunting. In: European Breeding Bird Atlas 2: Distribution, Abundance and Change, S. 866 - 867 (Hg. Keller, V.; Herrando, S.; Voříšek, P.; Franch, M.; Kipson, M. et al.). European Bird Census Council & Lynx Edicions, Barcelona (2020)

Bauer, H.-G.; Aghababyan, K.: Emberiza melanocephala Black-headed Bunting. In: European Breeding Bird Atlas 2: Distribution, Abundance and Change, S. 866 - 867 (Hg. Keller, V.; Herrando, S.; Voříšek, P.; Franch, M.; Kipson, M. et al.). European Bird Census Council & Lynx Edicions, Barcelona (2020)

Bauer, H.-G.; Franch, M.: Apendix 1 (b): Native species recorded or mentioned in EBBA1 but not recorded in EBBA2. In: European Breeding Bird Atlas 2: Distribution, Abundance and Change, S. 883 - 884 (Hg. Keller, V.; Herrando, S.; Voříšek, P.; Franch, M.; Kipson, M. et al.). European Bird Census Council & Lynx Edicions, Barcelona (2020)

Bauer, H.-G.; Franch, M.: Apendix 1: Rare species. In: European Breeding Bird Atlas 2: Distribution, Abundance and Change, S. 881 - 883 (Hg. Keller, V.; Herrando, S.; Voříšek, P.; Franch, M.; Kipson, M. et al.). European Bird Census Council & Lynx Edicions, Barcelona (2020)

Bauer, H.-G.; Franch, M.: Appendix 2: Rare non-native species recorded during EBBA2. In: European Breeding Bird Atlas 2: Distribution, Abundance and Change, S. 884 - 909 (Hg. Keller, V.; Herrando, S.; Voříšek, P.; Franch, M.; Kipson, M. et al.). European Bird Census Council & Lynx Edicions, Barcelona (2020)

Bauer, H.-G.; Klaus, S.: Tetraogallus caspius Caspian Snowcock. In: European Breeding Bird Atlas 2: Distribution, Abundance and Change, S. 72 - 72 (Hg. Keller, V.; Herrando, S.; Voříšek, P.; Franch, M.; Kipson, M. et al.). European Bird Census Council & Lynx Edicions, Barcelona (2020)

Bauer, H.-G.; Ottens, G.: Branta hutchinsii Cackling Goose. In: European Breeding Bird Atlas 2: Distribution, Abundance and Change, S. 105 - 105 (Hg. Keller, V.; Herrando, S.; Voříšek, P.; Franch, M.; Kipson, M. et al.). European Bird Census Council & Lynx Edicions, Barcelona (2020)