. Fig. 29. — Photograph of a fowl's head showing infra-orbital tumor caused by roup. (After Roebuck.) the nasal passages, soon extends to the eyes and to the spaces which exist immediately below the eyeballs. The eyelids are swollen, and are closed much of the time. They may be glued together by the accumulated secretion. The birds sneeze and shake their heads in their efforts to free the air passages from the thick mucus. The appetite is diminished and the birds sit with their heads drawn in, wings drooping, with the general appearance of depression and illness.

---

Size: 2828px × 1767px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1910, booksubjectpoultry, bookyear1915