Greetings All,
In Washington, from where I just moved, we have had a recent mini-flurry (over last 5-7 years) of February records for returning Swainson's Hawks. Probably 5 or so records in total, but since there were none before, a real jump. During the last decade or so, small populations of wintering Swainson's Hawks have been found in North America (CA's Central Valley, s. Baja California Sur) and others may exist elsewhere. I had a Swainson's floating northward over suburban S Pasadena (well away from any suitable habitat) in late January this year. I would not be surprised if these North American wintering Swainson's arrived earlier at their breeding grounds than those from S. America. Timing of migration is super-complex, but just the vast difference in distance-traveled would have some effect, one would think. Cheers Steve Mlodinow Longmont CO -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/cobirds?hl=en.
