Translation:There is a cute bird behind you.
1) for the rhythm of colloquial speaking 2) 可爱鸟 sounds like a proper noun, but not wrong though.
This page may help you:
What tone is 只 here? According to the matching exercise earlier, it's 1st tone (yìzhī), but it sounds more like third or neutral in the recording.
The 1st tone is a “flat” tone. At long as the pitch is not too low to be confusing, it is still the 1st tone. The pitch can be mid-high~mid-high or high~high as you see fit.