Black-chinned Hummer at Penstemon
My wife got some great pictures of a juvenile Black-chinned Hummingbird nectaring from my Penstemon barbatus plants. Click on link below for pic. You can also see another pic here (cut and paste into browser):
You can tell this is a juvenile by the fine spotting on the throat. You can also see from the pick why they call these (and other Penstemons) beard tongues by the hairs projecting from the lip of the flower.
Here is a link that might be useful: juvenile Black-chinned Hummingbird