This morning I watched what appeared to be clearly a male Baltimore Oriole,
complete with black head and face, begin to build a nest and work on it
alone for about forty minutes. This is in Northwest Park in Mount Washington
in Baltimore. When I revisited the nest this afternoon the nest appeared
almost complete and was still being worked on by the same solitary bird.
Looking through all my bird behavior references, Kauffman, Ehrlich, Bent, I
can only find one citation for a male BAOR building a nest, in Bent. Is this
really anomalous behavior or am I looking at an anomalous female with male
markings? Iąd appreciate any experienced opinion.
Bryce Butler
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