From 72 complete migrations (20062007: n 27; 20072008: n 25; 20082009: n 20; 39 males and 33 females). All study
From 72 complete migrations (20062007: n 27; 20072008: n 25; 20082009: n 20; 39 males and PubMed ID:https://www.ncbi.nlm.nih.gov/pubmed/27375406 33 females). All study birds have been adult and prosperous breeders. Individual excellent of your birds tracked much more than after was inferred from past reproductive history (following [32]) by calculating the proportion of years these men and women successfully raised a chick throughout a five year period (2005009). (b) Analysis of location data PD-1/PD-L1 inhibitor 1 geolocators present two positions per day depending on light levels, with an accuracy of about 86 four km [27]. Light information were analysed utilizing TransEdit (to verify for integrity of light curves and to match dawn and dusk instances) and Birdtrack software (to estimate the latitude from dayProc. R. Soc. B (20)M. P. Dias et al.60N 40NFlexible migration of shearwaters20Nnorthwest AtlanticCanary current20S040SBenguela current Brazilian present central South AtlanticAgulhas current60S 80W60W40W20W020E40E60EFigure . Winter distribution of Cory’s shearwaters from Selvagem Grande (95 kernel density maps, from 57 person tracks). Red asterisk indicates the colony location. the activity patterns of birds for the duration of stopovers (percentage of time spent on sea surface and number of landings per hour) with these outdoors stopovers (sensu [38]), utilizing a bootstrap paired comparison style [39]. We had been only in a position to analyse information throughout the southward migration, owing to the lack of latitudinal info through the return migration (see above). Activity patterns were derived from saltwater immersion data (wetdry), registered by the geolocators having a 3 s precision. Person repeatability in migration timings was evaluated with intraclass correlation coefficients [40]. Oceanographic data (seasurface temperature (SST) and chlorophyll a concentration; month-to-month averages with a 9 km resolution) through midwinter (December and January, 2006009) have been obtained from the SeaWiFS project (http:oceancolor.gsfc. nasa.gov). Analyses had been carried out working with the R software program, such as the packages maptools, adehabitat, sp and proj4. Signifies are presented s.d. all through.initial key wintering destination (mean arrival date: December 7 days). Birds left their wintering places about mid February (9 February 9 days) and arrived at Selvagem Grande 3 weeks later (four March days). There were no consistent differences in timing of these events amongst years or sexes (ANOVA; all p . 0.05).3. Final results (a) General migration and wintering patterns We identified six broad wintering regions of Cory’s shearwaters from Selvagem Grande (figure ): Benguela existing (5 of days spent by the population within this area), Agulhas existing (three ), central South Atlantic (6 ), Brazilian present (eight ), northwest Atlantic (9 ) and Canary current (three ). The 95 per cent kernel didn’t clearly split the wintering locations in the Benguela and Agulhas currents (figure ), but we thought of these as separate destinations determined by oceanography [4,42]. Merging these places didn’t substantially change any from the analyses presented below. Cory’s shearwaters left the colony for the duration of the initial fortnight of November (imply departure date: five November four days), and took 36 days to reach theirProc. R. Soc. B (20)(b) Wintering web site fidelity 5 out of 4 people changed their principal wintering places in successive years. This involves two birds that switched in the South to North Atlantic (figure 2a,b), two in the western to eastern Atlantic (figure 2c,d) and one from the Benguela to Agulhas currents (not illustr.