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Yes Birds are territorial and will notice a reflection in the glass. Not understanding they are seeing themselves, they will peck at the "intruder" and try to get it to fly away.
Also, bugs tend to gather against glass at night when the lights are on. This results in birds gathering the next morning to get an easy breakfast from the bugs that remain on the glass.
What else can I help you with?
Why do birds knock their beaks against things?
to find food or make shelter! errbody knows that!
Do birds have beaks?
Yes. All birds have beaks.
Why do Blue Jays have beaks?
because they are birds. all birds have beaks :-)
Do chicks have beaks?
Because chicks are young birds and birds have beaks.
Why do chicks have beaks?
Because chicks are young birds and birds have beaks.
Do some birds have serrated beaks?
yes some birds do have serrated beaks
Why do some birds have very long beaks while others have flat beaks?
Birds beaks are designed for what they eat and where they live.
Do all birds need beaks and feathers?
Yes birds do need beaks and feathers.
What are ribbon-tailed birds of paradise beaks for?
Birds of paradise use their beaks to eat fruit.
Why is it important that birds have large beaks?
Birds need their beaks to obtain prey and defend themselves.
Why are birds do have beaks?
not all birds but some do
Do hens have beaks?
Yes, to my knowledge all birds have beaks yes they do. if they did not have beaks then how would they
