Evolution in an Urbanizing World
Did you know that it has been estimated that the anthropogenic mass, representing all human-made objects, would exceed the living biomass in 2020 ± 6 years? Each year, humans accumulate 30 Gigatons of anthropogenic mass, based on the averages of the last 5 years. The article that made these estimations even mentions that “this corresponds... Continue Reading →
The weather on the northern hemisphere is getting warmer which means beach days are approaching. Every beach dweller can confirm that seagulls (Larus sp.) can be very cunning and cheeky in order to steal food. Is this their ancestral behaviour or has this evolved with the rising of urban areas? Pavlova and Wronski (2020) studied... Continue Reading →
Knotted willows characterise many Dutch landscapes, where they are often seen in a row along creeks that have existed for decades. These willows are pruned every few years, which causes the characteristic wide “knot” at the treetop to form over time. Complex shapes can form due to this pruning, and it is quite common to... Continue Reading →
[embedyt]https://www.youtube.com/watch?v=obHtOIJrwh8[/embedyt] Our perceptions of wildlife and nature are shaped by the media which highlights. The mold has been set by great figures like David Attenborough, with his memorable narrative voice. However, these documentaries only explored 'pristine' landscapes in far away lands, while ignoring the creatures that must contend with the Urban Jungle. In my first... Continue Reading →
Who would ever have expected to see plovers on the banks of the Huangpu River in Shanghai? The Huangpu River is the "mother river" of Shanghai that flows north throughout Shanghai. It passes some of the most population-dense regions of the city, including Lujiazui and the Bund, and provides green paths on both banks for... Continue Reading →
Spotted Lanternflies (Lycorma delicatula) have become an unavoidable nuisance since their arrival in the Big Apple in 2020. These clumsy hemipterans have managed to dominate the urban jungle due to their bright red warning coloration, which is indicative of their bitter tasting chemicals they uptake from their favorite food source, the Tree-of-Heaven (Ailanthus altissima). Despite... Continue Reading →
Metabolic adjustment in urban birds: glycometabolic enzyme activities in urban and rural tree sparrows (passer montanus) J Shang, S Cun, S Zhang, W Liang Abstract Urbanization is rapidly changing habitats of wild birds around the world. Food availability is one of the important factors leading to phenotypic differences between urban and rural bird populations. Comparing... Continue Reading →
Native to the Indian subcontinent and the southern fringes of the Sahel, the ring-necked parakeet (Psittacula krameri) looks wonderfully out of place in the cities of Western Europe. How and when exactly the colourful bird species established itself in isolated pockets so far from its naturally occurring range is heavily disputed, and subject to many... Continue Reading →
Sadly, plastics and litter have become part of the urban and often rural environment. It can be found almost everywhere and in any form – ranging from plastic bags to broken traffic cones. We consider it trash, however, for some birds, it is a jackpot. Often, litter is creatively included during nest building by these... Continue Reading →
Check out this Turkey Vulture (Cathartes aura) soaring over the suburban streets of Texas! These birds are usually seen in more rural environments, such as farmlands or long stretches of road, but I was pleasantly surprised to have this bird soar close over my head as I walked my dog. Check out the nictitating membrane... Continue Reading →
Influence of habitat type and distance from source area on bird taxonomic and functional diversity in a Neotropical megacity Marcos Antônio Melo, Patrícia Mara Sanches, Demóstenes F. Silva Filho & Augusto João Piratelli Abstract The Neotropical region has been subjected to massive urbanization, which poses high risks for some global biodiversity hotspots and losses of... Continue Reading →
When I returned to my hometown suburb in Texas, I was greeted by the familiar sight of Muscovy Ducks (Cairina moschata) hanging out in and around the numerous constructed wetlands that keep my suburb from going underwater. Notably, male Muscovy Ducks are the largest duck in North America! Despite being such a common sight in... Continue Reading →
While huddled up in a nook on my apartment's rooftop, camera set up and aimed at the skies above, I briefly witnessed a skirmish between a Red-tailed Hawk (Buteo jamaicensis) and a Peregrine Falcon (Falco peregrinus). I was able to document the interaction above my head with the featured image above. I feel so honored... Continue Reading →
Unexpected dispersal of Australian brush-turkeys (Alectura lathami) in an urban landscape MATTHEW J. HALL, JOHN M. MARTIN, ALICIA L. BURNS, AND DIETER F. HOCHULI Abstract Australian brush-turkeys (Alectura lathami) are atypical urban colonising birds due to their poor flight and dispersal ability, ground foraging and nesting behaviour, and lack of parental care for their chicks.... Continue Reading →
In a previous post titled Meta-analysis of Urban Bird Phenology, we discussed how urban conditions have affected the average value of phenology and reproductive phenotypes in bird species. Capilla-Lasheras et al. found that urban bird populations had lower values than their non-urban conspecifics for three life-history traits, indicating earlier lay dates, smaller clutch sizes, and... Continue Reading →
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