TWITTER!!
Barclays.
Nestle
The logo you are referring to is the Twitter logo. It features a stylized blue bird, but it does not have a red circle; the bird is typically presented against a white background. If you meant a different logo, please provide more details for clarification.
Hollister
The company that has a blue hexagon with a silver spade as their logo is Piaggio.
aerie
Barclays uses a blue eagle as their logo.
Twitter's logo is a blue bird with "Twitter" written in lowercase text.
Nestlé
The Clorox Company manufactures food, chemical and consumer products. The logo of this company is diamond shaped. This diamond appears on all products of the company. The company logo has the colors green and blue.