Table 1 Occurrence of crossed beaks in three local chicken breeds based on breeder reports between 2012 and 2017
Breed | Number of reports | Total number of birds | Normal | Crossed beak |
|---|---|---|---|---|
Appenzeller Barthuhn | 55 | 797 | 738 (92.6%) | 59 (7.4%) |
Appenzeller Spitzhaubenhuhn | 35 | 454 | 447 (98.5%) | 7 (1.5%) |
Schweizerhuhn | 75 | 1447 | 1435 (99.2%) | 12 (0.8%) |
Total | 165 | 2698 | 2620 (97.1%) | 78 (2.9%) |