High elevation migrants.
The last few days Brenda and I have been birding the high county in southwestern Colorado. Birds migrating south bound must fly up and over these passes. When weather is nice, bird the canyons that drain south. Birds fly up and over being push along by light northerly winds and don't stop until the summit has been reached. Then they feed their way down the other side. When the weather is socked in, bird the canyons that drain north. Now the birds wait until the weather clears before they move up and over the passes. I have always suspected that to be the case but never really had the time to check it out until now.
Around Molas Lakes and Pass we found a Loggerhead Shrike at 10,500 feet eating grasshoppers(new elevation record). We added two new birds to the San Juan County List which has one of the most complete county lists in western Colorado, thanks to E. Bruce McLean, Ph.D. and his annotated bird list and complete records all written up. The first new species were a couple of Cinnamon Teals at Andrews Lake. The second was an Osprey fishing Molas Lake. We added many county species to our personal list so we are now out of the red-faced category for San Juan County.
Attached is the Summer Report. The only birds in this report are the birds that are casual for June and July according to Birds of Western Colorado. I may not have all the data that I should have on some of these species. I do not have the last date for the Blue-throated Hummingbird because occurred in August and that is within the Fall Reporting Period. I will get the first date changed to 30 July. If you find and errors report them to me. I will then enter them into the database correctly.
Birding may be very good the next couple of days as the monsoon may be returning. Migration is in full swing.
Coen and Brenda