Tamron 150-600mm lens - an update

Today i return the Tamaron lens i have had for the past week. Wasn't able to do as much with it as i'd hope, still, it was enough that i decided to purchase the lens. Heavy and cumbersome, it is still the lightest lens on the market for what it does and also the least expensive. Went out this morning searching for the birds we could hear -they were surrounding us - but mostly not really viewable. A few more photos from that lens:

Towhee

House Finch

Everyday birds; a Towhee and House Finch - both males singing to attract mates.

They came out pretty well considering the light was very blah and i'm not a fan of shooting upwards but that is where most of the birds are. I look forward to visiting a bird preserve where birds are plentiful.

O.K., now to pack up the lens and get it to Fed Ex.

UPDATE: I bought the lens as a result of the photos above; see Pt. Aransas Nature Preserve for its first use.