While walking along the Tin Can Bay foreshore the other morning I watched quite a number of Gull-billed Terns. It was especially interesting to see one bird showing some juvenile plumage. This one is possibly not more than 3-4 months old. These terns are resident here but they go to inland waters to breed when the conditions there are right. Exactly where the ones from this area go is apparently not known. A couple of years ago I saw a young bird with this much juvenile plumage, but never with more than this.
Juvenile Gull-billed Tern
This photo shows two birds in adult plumage on the left, the one in the middle has some white showing in its cap as it goes into non-breeding plumage, and the bird on the right is a Caspian Tern.
This photo shows a Crested Tern in non-breeding plumage and behind it a juvenile (or maybe a non-breeding) Gull-billed Tern.
Crested, Caspian and Gull-billed Terns are the three terns resident in this area. All of them spend a short time away in other areas of Australia during their breeding.