The 24th of february I observed my first 2 spoonbills this season on the muddy-flat near Hee on our island Terschelling (The Netherlands). Both birds were just arrived and they made a short stop to rest out. After half an hour they flew rather quick eastward. Probably they have still a long way to go before they reached their breeding area.
About this observation I looked back to the early eighties. I was just setteld on the this island and I heard about a small colony (ca. 20 pairs) of spoonbills breeding on the “Second Dunes” on the reserve “The Boschplaat” on the east part of our island. In this area spoonbills are breeding on the floor and we decided to start to ring some young birds. We used a metal ring from our birdcenter Arnhem and a unique colourring-combination. When the chickens are 4-5 weeks old we entered the colony with a group of 8 persons and we circle a small cluster of youngs to catch them and to ring them.
Discovery of the Wadden islands
In that time the population of spoonbills increased. In the past there where only spoonbills breeding on the island of Texel but nowadays on all islands in the Waddensee area are colony’s of spoonbills. Even the islands of Germany and in north Jutland (Denmark) are discovered by spoonbills.
Wadden, Noord-Holland en Zeeland
Yearly we try to ring about 600 young spoonbills in the Netherlands not only from the colony’s in the Waddensea but also from colony’s on the mainland; about 25-30 young birds on each location.
Ring combinations and their limits
In the past we used a lot of different colourring-combinaties. Starting with colourrings withs bars till colourrings with engraved letters or numbers. During a couple of years we used also a socalled flagring in combination with 4 other colourrings and a metal ring. In the Netherlands we started with a yellow flagring and later a black flagring. In Germany we used a dark-green flagring and later a lime-coloured flagring. But sometimes a colourring disapeared or the colour of some rings changed so that identification was hardly impossible. Nowadays we use a white colour with 4 engraved inscriptions (letters or numbers) and always starting with a N reading top down. The white colourring fixed on the lefttibia and a metal ring on the righttibia. Each system of colourring using have its advantages or its disadvantages. We will evaluate this system within a couple of years.