The ontogeny of migration routines used by wild birds remains unresolved. Here we investigated the migratory orientation of juvenile lesser spotted eagles (LSE; Clanga pomarina) based on translocation and satellite tracking. Between 2004 and 2016, 85 second-hatched juveniles (Abels) were reared in captivity for release into the declining German population, including 50 birds that were transloca...

Despite identification of multiple factors mediating salmon survival, significant disparities in survival-to-adulthood among hatchery- versus wild-origin juveniles persist. In the present report, we explore the hypothesis that hatchery-reared juveniles might exhibit morphological defects in vulnerable mechanosensory systems prior to release from the hatchery, potentiating reduced survival after...

Juvenile red snapper settle across several complex habitats, which function as nurseries for young fish. Little is known about their life history or feeding biomechanics during this time. However, recent studies have shown higher growth rates for juveniles located on mud habitats adjacent to low profile reefs, perhaps because of varied prey availability and abundance. To further investigate the...

The authors conducted a content analysis of a random sample of local television news programming aired in the Los Angeles area to assess representations of Black, Latino and White juvenile law-breakers. Results revealed that Black and Latino juveniles were significantly more likely than White juveniles to be portrayed as perpetrators on television news. Black juveniles were overrepresented as l...

Adolescents with a migration background account for a substantial proportion of juveniles in custody. Psychosocial adversities pose a significant risk for criminal behaviour. So far, the nature of psychosocial adversities experienced by migrant youth is understudied. The aim of this study was to explore differences in psychosocial background in three ethnic groups (Turkish, former-Yugoslavian a...

1. Calidris mauri Cabanis (Western Sandpiper) exhibits a pronounced post-growth age-dependent difference in small intestine size during southward migration, such that the later-migrating juveniles have larger small intestines than do the adults. Potential causes and consequences of this age-dependent difference are examined. 2. Premigrant juveniles of full structural size had small intestines t...

Juveniles should choose social partners on the basis of both current and future utility. Where one sex is philopatric, one expects members of that sex to develop greater and sex-typical social integration with group-mates over the juvenile period. Where a partner's position in a dominance hierarchy is not associated with services it can provide, one would not expect juveniles to choose partners...

Very little is known of the challenges to suspension feeding performance facing early juvenile marine invertebrates, although scaling considerations suggest juveniles are often at a disadvantage. For example, early juvenile ascidians have relatively, as well as absolutely, narrower siphons than later stages, generating high resistance to flow (Sherrard & LaBarbera 2005: Mar Ecol Prog Ser 287:12...

The high loss of newly released hatchery-reared European lobster (Homarus gammarus) juveniles for stock enhancement is believed to be the result of maladaptive anti-predator behaviour connected to deprived stimuli in the hatchery environment. Our objective was to learn if an enriched hatchery environment enhances shelter-seeking behaviour and survival. In the "naïve" treatment, the juveniles we...