da pizzari » 4 lug 2014, 14:55
Il rondone comune puo' avere albinismo parziale, vedi 3 esempi documentati sotto:
1) McGuigan, Chris (1999) A partially albino common swift in Strathclyde. Birding World Volume: 12 Issue: 8 Pages: 318
2) Jacobs, Maarten (1999) Partially albinistic common swift in France in July 1996.Dutch Birding Volume: 21 Issue: 1 Pages: 29
3) Robel, Karl (1997) Remarkable breeding biology of the common swift Apus apus. Ornithologischer Anzeiger Volume: 36 Issue: 1 Pages: 51-53
Tommaso