Certhia familiaris americana. Lake Umbagog, Maine. 1880. " 29. Set I-5. Nearly hatched; ash stub over water; height five feet. The character of this nest was unusu- al. The bark scale was so small and so closely attached to the tree that it seemed impossible that there could be space left within for the nest. We discovered it by seeing the female alight on the trunk and disappear be- hind the bark. I tapped on it sharply but she refused to come out; looking in I could see her closely squatt- ed on the nest, her little form palpitating visibly with fear. Upon paddling off a little way she came out. June 1. Ser K-5. Nearly hatched. Fir; height eight feet; female sitting. She flew from the nest when I rapped on the bark but beyond an occasional creep showed no soli- citude. The bottom of this nest hung down below the lower part of the bark so that we saw it from some dis- tance: Another about fifty yards off contained newly hatched young (June 2) Set I-5. -- Fresh. Ash stub over water; seven feet; found May 24 when only a few shreds of material had been placed within the bark-scale. " 3. Visiting the nest found May 21 and prying open the bark, the young, four in number, started simultaneously and flew out. One falling in the lake was seized and instantly swallowed by a huge bull-frog; the others when held against the trunk of a tree instantly crept upwards using the short tail precisely in the manner of the old bird. " 4. Set N-6. Incubated seven days. Fir--ten feet; the bark-scale standing out from the tree at a wide angle the nest visible several rods away; female sitting; she flew from the nest just before I reached it and im- mediately disappeared in the woods; the male was sing- ing near. " 7. Set N-6. Fir on edge of water; height eight feet; Incubation four days. Nest found May 27 when it contain- ed one egg. " " Set O-4. -- Fir--five feet--water's edge outside woods-- fresh; nest found May 27 when only a few shreds of the foundation had been laid.