Posted by Colin Hughes on January 01, 1970 at 00:00:00
When I saw the bird, an experienced birder nearby suggested it might be an old individual, not in good enough condition to migrate. This made a lot of sense to me; what better things does a shoveler have to do other than going North and mating? It's consistent with the leg too; older individuals like me have had more time to pick up nagging injuries.