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Nature Reflections - May 4, 2006
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The Grebe Family by Jean Griffin Like
all other living things, birds are classified by scientists and
naturalists. A family of birds is a number of different species that
have characteristics in common, and one family of birds is the Grebes.
In
These
Grebes are early migrants, arriving soon after the ice has disappeared.
The courtship of a pair is a lively event; the male rushes about,
splashing along over the surface of the water, or repeatedly diving
below and coming up near his intended mate, and voicing his admiration
in a variety of soft, cooing notes. Once paired a nest site will be
sought, and the nest will be built around or among dead or growing
reeds and usually anchored to them. Built of any available vegetable
matter with the whole often plastered together with the soft, green
scum found on stagnant water, it is usually two to four inches above
the water and up to a foot in diameter. Mama
grebe will lay from five to seven eggs and both birds will incubate.
Eggs are laid one a day, and hatching occurs over a similar number of
days until the family is complete. The tiny young are very precocious
and leave the nest soon after hatching, which means some are out and
swimming while there are still eggs to be hatched. Instinctively they
are expert swimmers and divers, though they cannot remain under water
more than a few seconds. Sometimes the parents will carry them on their
backs. The
downy young are pretty little balls of fluff, mainly glossy black above
but strikingly marked with stripes, and will be half-grown before the
adult plumage appears, first on the breast, then in the wings, and will
be fully grown before the down entirely disappears. The black throat of
the adult and characteristic black band on the bill are acquired just
before breeding season. Pied-billed
Grebes seem reluctant to migrate, and in September and October may be
seen lingering in family groups, or pairs, or even singly, until forced
to seek their fresh water habitat for the winter further south. There are other grebes that visit
Observations: Ioma Robinson was delighted to see a Red-necked Grebe on
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