Hi Brenda , the mystery bird could be about 8-9 inches but in a slim way not a chunky way. It really gave my bluebirds a working over too! LOL...It seems to have taken a liking to a particular part of my chainlink fence that happens to be close to the nestbox so this upsets the bluebirds. It wouldn't give in to the blues either it kept its ground. Which usually the blues run other birds away from their box but this pretty bird wont go. The way it twitters i thought maybe a swallow but it just doesnt look right and it does look like a king bird shape. You may be right about it being a kingbird because i looked at some pics of kingbirds to see if it could be and i really think you are right. But it says the kingbird we should have has a white belly and this one has a yellow belly. It also puffs its head feathers up when it gets upset so it looks like it has a fuzzy hat on. Its really cute and holds itself very straight and perches on the fence to see insects in the grass. Do you think it could be a western kingbird that got lost? I saw it flying with the group of sparrows that are here migrating so maybe it flew here with them. I didn't see it here all summer, just this past week when all the little different sparrows started showing up. What if it got with the wrong group of migrants? I think they go to south America dont they? Maybe mine can go to Florida and keep warm. I haven't seen it today but there has been a big gray hawk hanging around all day so i haven't seen many birds at all today. I dont blame them, its a big gray hawk that i thought was an owl at first but then i seen it was a hawk. So i guess that was my bird sighting today! LOL.... Thanks Brenda Bonnie

Blue-gray gnatcatchers are very common little guys at certain times of the year, and though they are here year round, they often travel in flocks of migrating warblers. Their call is distinctive and you often hear them before you see them. The tail is actually black with white borders, and could look like it was a black stripe down the center. Gnatcatchers are very tiny, and certainly can hover in front of blooms looking for insects. Here is another link where you can listen to the call, etc, and see if you can pinpoint the ID for sure. Marcia Here is a link that might be useful: Cornell Ornithology Lab

Okay, they're back and in better light. Mystery solved, I'm being visited by a lovely pair of Lazuli Buntings, oh my gosh!! This is a first in my yard since I've lived here. Thanks all for trying to help me. I got a very clear look at these birds today, and saw that the blue extended across the back, and the head was even bluer than I had realized. I thought at first it might be a Western Bluebird, but it wasn't big enough. Such a pretty little bird and so glad to see it at my feeders!!

Correct on both ID's & yes, many birds' bills change color as they mature. Also some bills are different color in breeding season vs. non-breeding season & there are some male vs. female bill differences also.