A characteristic of this maple tree in our front yard is that most of its leaves are at the extremities of its branches. It occurs to me that all the maples on the street are like this. Perhaps all maples everywhere are -- I know even less about trees than I do about birds.
At lunch time today, I was attracted to the tree by an odd noise. It was obviously a bird, but the noise it was making sounded like an old man trying to clear his throat. What's more, the noise went on for a long time.
From outside the tree I couldn't see anything, so I walked underneath and located the responsible party.