Evolution in an Urbanizing World
Humans have significantly impacted environmental conditions and landscapes for several decades through our urban expansion. These changes have produced selective pressures different from those present in non-urban areas. In response to these selective pressures, many species have diverged in physical, behavioral, and reproductive traits between their urban and non-urban populations. In addition, urban landscapes are... Continue Reading →
Plenty of rooftops with few neighbours occupied by young breeding Yellow-legged Gulls (Larus michahellis): does this occur at the expense of their health condition? Joana Pais De Faria, Vitor H. Paiva, Sara N. Veríssimo, Catarina S. Lopes, Rita Soares, João Oliveira, Ivo dos Santos, Ana C. Norte, Jaime A. Ramos Abstract Gull populations, as largely... Continue Reading →
Nesting Site and Plumage Color Are the Main Traits Associated with Bird Species Presence in Urban Areas Lucas M. Leveau & Isis Ibáñez Abstract Urban areas are expected to grow in the next decades, filtering bird species from the regional pool based on their life history traits. Although the impact of urbanization on traits such... Continue Reading →
Habitat provision is a major driver of native bird communities in restored urban forests Elizabeth Elliot Noe, John Innes, Andrew D. Barnes, Chaitanya Joshi, Bruce D. Clarkson Abstract 1. Urbanization, and the drastic loss of habitat it entails, poses a major threat to global avian biodiversity. Ecological restoration of urban forests is therefore increasingly vital... Continue Reading →
Cat colonies and flight initiation distances of urban birds: Dealing with conflicting sources of citizen wellbeing Mario Díaz, Jonatan Fernández, Alicia Page Abstract Feral cat colonies in cities improve the wellbeing of people who feed and care for them, but they can have negative effects on biodiversity due to the predatory behaviour of cats. We... Continue Reading →
Urban trees support diverse wildlife, as Jamaican biologist and naturalist Damany Calder pointed out in Instagram this week with his observation of the Yellow-Billed Parrot (Amazona collaria), endemic to Jamaica and vulnerable to extinction, in a Black Olive tree (Terminalia buceras) in the middle of a busy parking lot of a shopping center in Kingston!... Continue Reading →
Which Traits Influence Bird Survival in the City? A Review Swaroop Patankar, Ravi Jambhekar, Kulbhushansingh Ramesh Suryawanshi, and Harini Nagendra Abstract Urbanization poses a major threat to biodiversity worldwide. We focused on birds as a well-studied taxon of interest, in order to review literature on traits that influence responses to urbanization. We review 226 papers... Continue Reading →
Recent spread of blue tits into the Barcelona urban environment: morphological differences and the role of balanced dispersal Juan Carlos Senar & Mats Björklund Abstract Rates of phenotypic change are greater in cities than in any other habitat. Consequently, urban habitats are an ideal experimental area to study contemporary evolution and adaptation. A key question... Continue Reading →
Parallel, urban-driven phenotypic changes There is increasing evidence that, for a given species, individuals inhabiting cities often differ from their counterparts outside of cities. Such differences may result from individuals suffering from environmental conditions in cities. For instance, my colleague Michela Corsini showed that, in the great tit (Parus major) and the blue tit (Cyanistes caeruleus),... Continue Reading →
Does melanin-based plumage coloration reflect health status of free-living birds in urban environments? Hani Amir Aouissi, Mostefa Ababsa, Aissam Gaagai, Zihad Bouslama, Yassine Farhi, and Haroun Chenchouni Abstract Background: Ecological functions and processes in urban ecosystems are governed by various human activities. City-adapted and city-exploiting animal species are expected to present certain specific behavioral and physiological... Continue Reading →
Invasion success and tolerance to urbanization in birds César González-Lagos, Laura Cardador and Daniel Sol Abstract Cities are considered hotspots of biological invasions, yet it remains unclear why non-indigenous species are so successful in environments that most local native species do not tolerate. Here, we explore the intriguing possibility that humans may be unintentionally introducing... Continue Reading →
Monk parakeets Myiopsitta monachus Sometimes referred to as the Quaker parrot due to their quaking vocalizations, the monk parakeet is a small, green parrot with grey breast and head feathers accented with blue feathers on their primaries. In addition to their unique color, these birds can often be picked out by their noisy/screechy vocalizations.... Continue Reading →
Cities, defined as large human settlements of the contemporary human population, have been part of the “Old World” landscape for long time, including Europe. However, the current exponential increase of the urbanised landscape is an unprecedented phenomenon, which has an impact at multiple ecological scales. Urbanisation and its derived actions can fragment wildlife populations and... Continue Reading →
There have been multiple sightings of these two turkeys in my neighborhood. I was trying to get home and these two just stayed in the middle of the street, blocking my way. These turkeys are HUGE and have zero fear of my car! Do you have a photo or video of an urban species doing... Continue Reading →
What makes a bird successful in the city? Jakob Mueller and colleagues first attempted to answer this question in blackbirds, finding genomic signatures of selection in the SERT gene associated with harm avoidance. Now, building on only a handful of studies to explore the genomic basis of urban adaptive responses, Mueller and colleagues tackle this... Continue Reading →
Proudly powered by WordPress | Theme: Baskerville 2 by Anders Noren.