Invading 'rat of the sky' irks Algerians


Invading 'rat of the sky' irks Algerians
  1. Invading 'rat of the sky' irks Algerians
    yourmiddleeast.com
    The 60-year-old is not alone in despising this versatile scavenger, whose Mediterranean population has boomed in recent decades.The "rat of the sky" has taken advantage of human waste to supplement its normal marine diet, breeding fast and becoming the region's most common…
    Africa

The 60-year-old is not alone in despising this versatile scavenger, whose Mediterranean population has boomed in recent decades.

The "rat of the sky" has taken advantage of human waste to supplement its normal marine diet, breeding fast and becoming the region's most common seabird.

Aicha, an Algiers resident with henna-dyed hair, has shared her home with a pair of gulls and their offspring for three years.

"They eat all the leftovers," she says. "No need for a bin."

Nawel Derradji, a doctoral student in animal ecology at the University of Bab Ezzouar in Algiers, says the country's open-air rubbish tips have given the gulls "abundant, readily accessible and regularly renewed sources of food".

That has driven "an extension of its breeding range and its colonisation of new habitats, in particular urban areas," she adds.

The yellow-legged gull, only recently classified as a species distinct from the herring gull, is invasive, aggressive, noisy and very messy.

Today the birds can be found as far as 100 kilometres (60 miles) inland, says Professor Riadh Moulai of the University of Bejaia.

- 'Cliffside' high-rise nests -

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"In the last 25 years, the population growth of yellow-legged gulls has doubled, and in some places it has reached 400 percent," he says, saying that cutting the country's reliance on open-air rubbish tips could drastically limit the species' spread.

The gull has adapted well to the urban environment, swapping its normal cliffside dwellings for terraces on the capital's high-rise apartment blocks where it builds nests out of rags, bones and bits of plastic.

A recent study in the capital found some 150 nests, compared with…

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