@article{fdi:010092903, title = {{D}ecrypting the breeding biology of the elusive and declining {T}ahiti {P}etrel {P}seudobulweria {R}ostrata}, author = {{P}agenaud, {A}. and {B}ourgeois, {K}. and {P}ayandi, {L}. and {W}eiss, {W}. and {V}idal, {E}ric and {R}avache, {A}.}, editor = {}, language = {{ENG}}, abstract = {{A}mong procellariids, the {T}ahiti {P}etrel {P}seudobulweria rostrata is one of the most endangered and least known species. {I}ts global populations are declining, yet demographic and ecological studies remain scarce. {U}nderstanding the breeding cycle and behavior of {T}ahiti {P}etrel adults and chicks is essential to develop effective protection measures. {T}o address this knowledge gap, {T}ahiti {P}etrel colonies of various sizes were studied at three sites in {N}ew {C}aledonia, with extensive sampling at two main sites and limited sampling at a third. {A} total of 157 burrows were monitored for up to two years using endoscopic cameras and camera traps. {T}his allowed the depiction of the breeding phenology, reproductive success, frequency of adult nest visits, chick behavior, first emergence, and fledging dates. {D}uring the study, 75% of the identified burrows were visited by {T}ahiti {P}etrels. {E}gg-laying peaked in {D}ecember but occurred year-round, indicating aseasonal breeding by {T}ahiti {P}etrels in {N}ew {C}aledonia. {T}he average breeding cycle was 329 +/- 11.6 days, including an average incubation period of 55.7 +/- 0.9 days and an average chick-rearing period of 110.7 +/- 5.6 days. {P}arents visited nests every 1.3 days on average during chick-rearing. {A}fter the chick's first emergence, which typically occurred 31 days before fledging, adult visitation decreased. {C}hicks did not show defensive behavior against predators, and most chicks fledged after nine days without feeding. {B}reeding success was 50% at a predator-free site and 32% at a site with invasive predators. {T}hese findings suggest high sensitivity to disturbance and depredation, contributing to the species' decline in {N}ew {C}aledonia and elsewhere in the world. {T}ogether with previous studies conducted in {N}ew {C}aledonia, these results provide crucial information for the implementation of adapted conservation measures for this declining species.}, keywords = {{T}ahiti {P}etrel ; {P}seudobulweria rostrata ; phenology ; breeding success ; behavior ; {NOUVELLE} {CALEDONIE}}, booktitle = {}, journal = {{M}arine {O}rnithology}, volume = {53}, numero = {1}, pages = {1--11}, ISSN = {1018-3337}, year = {2025}, URL = {https://www.documentation.ird.fr/hor/fdi:010092903}, }