. >>> lenore hemingway is being especially careful to keep her 20 feeders filled with sugar water at her home in sedona, arizona. >> make sure that they have all of the things that they need. they have the sugar feeders which they do rely on on their migration. they have all of the flowers that they love. it is a commitment. but the joy is getting to view them. >> no one is quite sure how the drought will affect hummingbird populations in the short term. biologists are more concerned about the long-term effect of climate change. fewer wildflowers means fewer sources of nectar along migration routes. ralph hawkins founded the hummingbird society. >> i would say there's a chance in the future that there will be significant problems with certain species where the birds find less of the sources of food than they found in years before. >> in difficult seasons like this, backyards can be welcome rest stops on the winged migration. lenore hemingway is glad to lend a hand. >> to see the beauty of the bird, the coloring, they're just amazing. >> amazingly small but also amazingly adaptable. s

. >> reporter: lenore hemingway is being especially careful to keep her 20 feeders filled with sugar water at her home in sedona, arizona. >> we make sure that they have all of the things they need. they have the sugar feeders which they do rely on, on their migration. they have all of the flowers that they love. it is a commitment, but the joy is getting to view them. >> reporter: no one's quite sure how the drought will affect humming bird populations in the short term. biologists are more concerned about the long-term effect of climate change. fewer wild flowers means fewer source of nectar along migration roots. ross hopkins founded the humming bird society gee, i would say there's a chance in the future that there will be significant problems with certain species where the birds find less of the sources of food than they found in years before. >> reporter: in difficult seasons like this, backyards can be welcome rest stops on the winged migration. lenor hemingway is glad to lend a hand. >> to just see the beauty of the birds, the coloring, they're just amaze. >> reporter: amazin

lenore hemingway is glad to lend a hand. >> to just see the beauty of the birds, the coloring, they are amazing. >> amazingly small, but also amazing the adaptable. >> that is the news, 4 scott pelly i'm bob schaefer, cbs news in new york, we'll see you tomorrow. >> good evening i am alan martin >> i am dana king. gun enthusiasts are claiming victory tonight after a bill that would have banned california legal assault rifles is pulled before the vote could even take place. >> cbs 5 was first to report and has been closely following four months the senators of legislation that would have banned assault rifle equipped with a so-called bullet but in. but the bill's author says that his fight is not over. >> in california you can legally own an ar-15 semiautomatic rifle as long as it has what is called a bullet button. that device allows the click detachment of the magazine even though under california law detachable magazines in combination with other features, are illegal. but under california regulations written to enforce the law, the bullet but makes the guns magazine sixth and therefo