Fig. 1

Nest shape and structure affects storage and management. a An Australian Magpie (Gymnorhina tibicen) nest ANWC N00252, composed almost entirely of human-made material, including clothes hangers and cables. Large and unwieldy nests such as this are difficult to collect and store. b Two Grey Fantail (Rhipidura albiscapa) nests ANWC N00179 and N00180, demonstrating ways that registration tags may be affixed to nests. At the ANWC the preferred method is to tie the registration tag on to the nest site attachment (left). If there is no appropriate nest site attachment, tags may be tied through the nest side wall, using spacer knots to avoid tension on the nest structure (right). This can be useful in that it allows researchers to examine the tag with minimal movement of nest materials but is only appropriate when nest structure is sufficiently robust