Report on Bird-Ringing for 1973

Information System for Bird Ringing: ”Tipu”

Modelling the Progression of Bird Migration with Conditional Autoregressive Models Applied to Ringing Data

Migration is a fundamental stage in the life history of several taxa, including birds, and is under strong selective pressure. At present, the only data that may allow for both an assessment of patterns of bird migration and for retrospective analyses of changes in migration timing are the databases of ring recoveries. We used ring recoveries of the Barn Swallow Hirundo rustica collected from 1...

Evaluation of some random eþ ects methodology applicable to bird ringing data

Existing models for ring recovery and recapture data analysis treat temporal variations in annual survival probability (S ) as ® xed eþ ects. Often there is no explainable structure to the temporal variation in S1 , . . . , Sk ; random eþ ects can then be a useful model: S i 5 E(S ) + e i . Here, the temporal variation in survival probability is treated as random with average value E( e 2 ) 5 r...

Listening for Ringing Black Holes

The gravitational radiation produced by binary black holes during their inspiral, merger, and ringdown phases is a promising candidate for detection by the first or second generation of kilometer-scale interferometric gravitational wave antennas. Waveforms for the last phase, the quasinormal ringing, are well understood. I discuss the feasibility of detection of the quasinormal ringing of a bla...

Ringing the changes