| To estimate nest age, we candled 1-2 eggs in each nest or aged nestlings from voucher photographs of known-age young. |
| Eggs were candled to determine incubation stage, and laying dates were calculated by backdating. |
| They bought or traded for eggs, which they candled to determine if they were good. |
| Eggs were candled at 13 days, and unhatched eggs at 20 days of incubation were opened to allow classification of down color. |
| These eggs are candled, graded, printed and packed in all the types of packaging required by your clients. |
| Eggs were candled to determine stage of incubation and to estimate hatching dates. |
