The absence in the Old World of humming birds is a further example of lack of evolutionary parallelism where it could well be expected. (religion-online.org)
Suppose we were like humming birds low mass but using oxidation of carbon at a very high rate to convert carbon to CO2 (and eating lots of carbon but it not staying in body long). (realclimate.org)
There were humming birds feeding from the tree blossom right next to our terrace. (havebabywilltravel.com)