Any comments on this?
looks like it could be a White-tailed Hawk - but it's a long time since I saw a neotropical buteo and they were difficult enough then.
Tim is correct - nice juvenile.
Last edited by JanJ; June 23rd, 2011 at 03:31 AM.
Looking though the other 'Swainson's' several others seem suspect too:
the similarity of a juv White-tailed to Swainson´s is rather marked with narrow wingtip ans to a certain extent structure but the clear white upper breast patch (variable in size), dark throat and seemingly lack of a dark - broader than rest of the tail bands - terminal tail band suggest White-tailed over Swainson´s
This on the other hand looks like a Swainson´s to me, pale head and some other features like tail pattern and overall jizz:
also looks like a Swainson´s on head pattern.
All the others exept nr 6 and this one:
which looks good for Broad-winged.
Some good comparison pic.
Last edited by JanJ; June 23rd, 2011 at 09:05 PM.
The subject hawk (http://www.wikiaves.com.br/191611&t=s&s=10234&p=1) differ somewhat to the one you showed in your last post. Some juvenile White-tailed shows variable pale head markings (http://www.pbase.com/dadas115/whitetailed_hawk) (http://www.pbase.com/davehawkins/image/123564789)
The suspected Swainson´s (which might in fact not be one?), is taken in August and can therefore not be a bird of the year, probably a 2cy. That makes it rather different from a 2cy White-tailed in that a 2cy (first basic) would show an all dark head and usually different underpart pattern.
Not only is the bill heavier in White-tailed the gapeline also reach further back almost to the middle of the eye.
Also shown in you last bird.
However, I might be wrong about the Swainson´s theory but it certainly looks like one.
Check this one:
Last edited by JanJ; June 24th, 2011 at 08:50 PM.