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Hamburger and Hamilton Stage 35

HH35 (8.5-9 days).
Webs between digits and toes inconspicuous.
Phalanges in toes distinct.
Feather germs more conspicuous.
Mid-dorsal line stands out distinctly in profile view.
>= 4 rows in inner side of each eye.
New feather germs near mid-ventral line, close to sternum, and extending to both sides of umbilical cord.
Nictitating membrane approaches outer scleral papillae.
Eyelids (external to nictitating membrane) extend towards beak and begin to overgrow eyeball.
Circumference of eyelids ellipsoidal.
4 rows on inner side of each eye.


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    The ABSTRACT ONTOLOGY (NOT Staged/Timed) with all pathways to child nodes materialised, in Plain Text only, as a Tree Report.

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    The ABSTRACT ONTOLOGY (NOT Staged/Timed) in OBO Flat File Format, version 1.2, available for viewing/editing using OBO-Edit.


  1. H. Eyal-Giladi and S. Kochav
    From cleavage to primitive streak formation: A complementary normal table and a new look at the first stages of the development of the chick : I. General morphology
    Developmental Biology, Volume 49, Issue 2, April 1976, Pages 321-337

  2. V. Hamburger and H.L. Hamilton
    A series of normal stages in the development of the chick embryo
    Journal of Morphology, 1951, Volume 88, Pages 49-92 (reprinted in Developmental Dynamics, December 1992, Volume 195, Issue 4, pages 231-72)

  3. R. Bellairs and M. Osmond
    The Atlas of Chick Development
    Academic Press, ISBN 0-12-084790-6, 1998

  4. C.D. Stern and P.W.H. Holland (Ed.s)
    Essential Developmental Biology: A Practical Approach
    Oxford University Press, ISBN 0-19-963423-8, 1993

  5. M.A.J. Selleck and C.D. Stern
    Fate mapping and cell lineage analysis of Hensen's node in the chick embryo
    Development, Volume 112, Pages 615-626, 1991