In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.

Chickens cause traffic chaos on Austrian motorway after transport truck crash 
  
 Updated 
  
 Austrian firefighters were charged with the tricky task of catching thousands of chickens running loose on a motorway, after a transport truck hit a bridge, spilling its freight onto the road. 
  
 The Saint Florian Fire Bigrade said emergency services were called to the A1 motorway south of Linz at 5.00am, but had trouble reaching the scene due to heavy traffic caused by the stray chickens. 
  
 It took about 120 firefighters four hours to catch the chickens one by one. 
  
 While the truck driver escaped uninjured, large numbers of chickens were killed in the accident. 
  
 Topics: disasters-and-accidents, accidents, road, emergency-incidents, livestock, austria 
  
 First posted ||||| File photo of a chicken. Photo: SEBASTIAN D'SOUZA/AFP 
  
 Emergency workers in Austria were called out to remove an estimated 7,000 chickens which were blocking a busy motorway on Tuesday. 
  
 The birds died or escaped after the lorry transporting them lost its load on the A1 autobahn near Linz in the north of the country. 
  
 “Boxes containing dead and injured animals were strewn over a 160-metre stretch (of road) while thousands of chickens ran onto the motorway on both sides,” police said. 
  
 The incident closed the motorway towards the capital Vienna during the busy morning rush hour and caused long traffic jams in the other direction as drivers slowed down to look. ||||| (CNN) A truck crash involving a sleepy driver and 7,500 chickens caused chaos in Austria on Tuesday after the birds blocked part of a highway. 
  
 The accident occurred on the A1 highway near the city of Linz. 
  
 Firemen remove chicken and transport boxes from the highway. 
  
 The driver of the truck transporting the chickens admitted to falling into "a second-long sleep" during which he veered right and collided with a bridge pillar, Franz Rockenschaub, of Highway Police Inspection Haid, told CNN. 
  
 The chickens were set to be killed for food, having laid eggs for some time. The company behind the venture has not been named. 
  
 Some of the chickens made a break for freedom following the crash. 
  
 In the aftermath of the crash, some of the birds were exposed and made their break for freedom, escaping from the vehicle. 
  
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Some 7,000 chickens on their way to be slaughtered had an unexpected shot at freedom Tuesday when the truck transporting them crashed into a bridge in Austria, spilling its load on the highway. Traffic on the A1 autobahn into Vienna was snarled for hours as authorities cleared the scene of dead birds and tried to catch the survivors, thousands of which ran onto both sides of the highway, the Local reports. The Australian Broadcasting Corporation reports that it took 120 firefighters four hours to catch all the stray chickens. A police spokesman tells CNN that the driver says he hit a bridge pillar after falling into a "second-long sleep." No humans were hurt in the accident.