The Cambridge natural history, Vol. 09 (of 10)Evans, A. H. (Arthur Humble)
Science
The Cambridge natural history, Vol. 09 (of 10)
Evans, A. H. (Arthur Humble)
Animals; Birds
{246}or–exceptionally–at the height of a few feet in a tree or bush. Rails
and Crakes make a more or less substantial fabric in sedges, grass, clover,
and so forth, _Creciscus_ and _Porzanula_ a spherical mass with an entrance
at the side; but _Pareudiastes_, _Cabalus_, and _Ocydromus_ are stated to
breed in most cases in burrows. _Gallicrex_ occasionally fashions its nest
on floating leaves, and the writer has seen a Moor-Hen's nest in a similar
situation. The eggs, from two to ten or more in number, are generally white
or cream-coloured with red-brown, olive, or blackish markings, and often
with faint lilac spots; those of the Coot are stone-drab with small black
specks; those of _Cabalus modestus_ are white with a few indistinct rufous
and grey flecks; those of _Zapornia parva_ and _Porzana bailloni_ are
instances of a thick olive-brown mottling. The adults are stated sometimes
to carry their young in their claws.
Exceptionally the plumage of the Rallidae is nearly black, as in
_Limnocorax_, _Fulica_, and _Habroptila_; slightly browner, as in
Gallinula; blue or greenish-blue as in _Porphyrio_: but the coloration is
normally sober, with a tendency to olive, brown, or chestnut. This may be
relieved by stripes of white, especially on the flanks; the under parts may
be nearly red as in _Creciscus levraudi_; and both surfaces may be spotted
with white as in the male of _Corethrura pulchra_, or flecked and barred
with it, as in _Rallus maculatus_. The sexes are usually alike, but
_Rallicula_, _Zapornia_, _Gallicrex_, and _Corethrura_ are instances of the
contrary.
Space, however, is wanting to give in detail a description of every form,
which is the less necessary in view of their general similarity; but the
following examples will enable a fair idea to be gained of the group.
_Rallus aquaticus_, the Water Rail of Europe and Central Asia, which
winters in North-West India and North Africa, is olive-brown above with
darker streaks, and lead-coloured below, the flanks being barred with black
and white. The genus is found in most parts of the world, with the apparent
exception of North-West Africa and the Australian Region. _Rallus elegans_,
the King-Rail, _R. longirostris_ (_crepitans_), the Clapper-Rail, and _R.
virginianus_ are well-known North American species, while _R.
madagascariensis_ is confined to Madagascar.
In _Hypotaenidia_, which ranges from India and South China to the Pacific
Islands generally, the whole lower parts are barred with black and white,
except in _H. striata_ and _H. mülleri_, where {247}these markings are
restricted to the sides and abdominal region, and in _H. brachypus_, where
the belly is plain.
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