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Topics containing the search term "owls" are:

1. Simple tool use in owls and cephalopods
   Burrowing owls place pieces of collected dung. These attract insects such as beetles that are then eaten by the owls.

2. Electrolocation and electrocommunication in weakly electric fish
   Fish have eyes, but they live in a much more complex sensory world, where even electricity plays a surprising - and convergent - role.

3. Independent eye movement in fish, chameleons and frogmouths
   One of the most surprising convergences amongst animals is that seen between a small fish that lives in coral sands, known as the sandlance, and the lizards known as chameleons.

4. Intelligence and cognition in birds
   House sparrows are known to gain access to shopping malls by flying in front of sensors that operate sliding doors, whilst herons have been shown to be adept fishers using baits and lures.

5. Birds: insights into convergence
   Intriguing ecological and morphological parallels can be found among the Neoaves. Many of these forms were initially believed to be each other's closest relatives, but are now widely recognised as classic examples of convergence. Think how similar swifts and swallows are, but they are only distantly related.

6. Beetles: insights into convergence
   The beetles are probably the most diverse animal group on earth, so it is not at all surprising that they provide many fascinating insights into convergence.

7. Electroreception in fish, amphibians and monotremes
   From an evolutionary point of view, electroreception is particularly intriguing as a sense modality that has been repeatedly lost and reinvented again.