Digital logbook nest box 10. 2004.

<body> <p> Your browser supports no frames.</p> <p> Write the next address. https://www.eilenbergkolonie.nl/Dag-logboeken/Box%2010%202004/Calendar.htm</p> <p> Or click on the next link. <a href="https://eilenbergkolonie.nl/Dag-logboeken/Box%2010%202004/Calendar.htm">Calendar</a></p> <p>This is the third report that is made by the Birdwatch system. This year we also have follow the Common Swifts in detail from arrive until leaving.</p> </body>