When condors hatch in the wild, biologists try to enter the nests and tag the young birds at about four months old. However, some nests are too dangerous or inaccessible to enter, so the chicks fledge (learn to fly) at about six months old with no wing tags. When that happens, biologists have to wait until the untagged condor comes to one of the trapping sites so it can get a wing tag and transmitter before getting released again.
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Last updated: May 16, 2023