Contrôles par Condition for Guifette moustac

Most encounters are obtained during the late 2010s. Majority of them are recorded in C Europe (92%), primarily during the period Jun-Aug (87%). Just couple of encounters prior to 1960. The encounters based on dead birds markedly decreased over time: from 71% during 1961-1990 to less than 1% after 1991; those based on alive birds considerably increased from 3% in 1961-1990 to 99% after 1991. The latter is mostly due to ringing recoveries, and especially to colour ring resightings. Shooting was an important factor in the past only (34% of all recoveries during the period 1961-1990).

Annual Movements for Guifette moustac

Post-breeding dispersal and autumn migration movements start in late Jul (Gochfeld et al. 2020) but are more evident in Aug-Sep – by this time W European breeders are encountered SW from their breeding grounds, mostly in Spain, some birds remaining in SW Europe until Nov. Birds breeding in SW Europe are encountered in W Africa as early as Aug (Mali), the wintering grounds near the Gulf of Guinea (Ghana) are reached in Sep with encounters until Nov. Spring encounters from Apr (Senegal) and May (Mali) indicate possible return migration routes; spring records exist also from Tunisia (Mar), Italy (Apr) and Hungary (May). Local short-distance movement in Dec suggests wintering in S Spain.

C European breeders migrate mostly SE, with encounters during migration and winter in Israel (Sep, Jan) and E Africa (Kenya, Dec).

Connectivité par mois par région pour Guifette moustac

Genetic evidence supports the existence of two distinct (W & E) subpopulations in Europe, which markedly differ in wintering distribution and seasonal migratory routes (Dayton et al. 2017). Dispersal movements are prominent from late summer. W European population takes SW routes, with encounters mainly in Spain, sometimes until late autumn. SW European breeders migrate mostly S towards W Africa where are encountered from late summer to mid-autumn. Return migration records (early to late spring) are spread from W Africa to C Mediterranean and C Europe. Local encounters in Spain in Dec indicate overwintering. Long-distance recoveries of the birds breeding in C Europe suggest SE direction of autumn migration, with winter encounters in the E Mediterranean & E Africa.

Return migration is mostly mid- to late spring.