High above in the tree tops, Icterus Galbula,
the Baltimore oriole, sings its sweet song, announcing its return from a long
journey of winter migration. In early spring, males establish their territories
and begin to attract females by chirping and chattering while hopping from
branch to branch. Depending on interest, the females will either ignore the
male or sing back and give a suggestive wing-quiver in response. Mating pairs
are often monogamous, and after a fluttery-feathery love making session, Mr.
and Mrs. Oriole prepare for their coming family. Among the elms, cottonwoods
and maples, the mother Oriole carefully constructs her unique hanging
nest. She anchors it high, hanging long
fibers over a small branch, and then poking her bill in and out to tangle the
fibers. The process is continued as a closely knit wall slowly forms. Males
occasionally bring nesting materials, but don’t usually help with the weaving,
preferring instead to patrol the family territory. The female lays three to
seven eggs with an incubation period of about two weeks. Once free of their
gestational protection, the hatchlings are fed by regurgitation by both
parents. After less than two weeks, the curious younglings start to venture out
of the nest and become independent thereafter.
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