Javan Lapwing (Vanellus macropterus)
The Javan Lapwing was a beautiful, up to 28 cm large bird that inhabited the island of Java, Indonesia; it may also have occurred on Sumatra and other islands, but that is not known for sure.
The birds claimed relatively large territories in regions with rather dry, steppe-like vegetation, which they inhabited as pairs.
The last individuals were seen in 1939, since that date there has not been the slightest trace of the species and it appears to be extinct. [1]
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References:
[1] Errol Fuller: Extinct Birds. Penguin Books (England) 1987
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(public domain)
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edited: 04.10.2020