Bridled Terns (Sterna anaethetus) have only recently been discovered breeding in New Caledonia, the previous nearest breeding colonies being in Eastern Australia. Bridled Tern breeding biology was investigated in a single, small (c. 100 pairs) colony during the 2003 and 2004 breeding seasons. Of 93 nests monitored, 82 were under cover (70 under rock and twelve under vegetation). Nesting location did not predict hatching success. Almost half (49%) of the 37 nests monitored in 2003 were reused in 2004. Egg-laying took place between late October and mid-January; egg volumes did not vary between the two breeding seasons. Chicks reached their asymptotic weight (132 g) at 37 d, faster than chicks in Australia (40–53 d). Wing length was the most reliable predictor of chick age. An equation based on density was generated to age eggs, and graphs to age chicks. An estimated 81% of clutches produced fledglings. Predation of tern nests by Silver Gull (Larus novaehollandiae) was not observed, but Peregrine Falcons (Falco peregrinus) were observed hunting and catching adult terns.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.