page springs black hawk
24 Feb 2019, 10:01 AM,
#1
page springs black hawk
1. 1 bird overwintered
2. according to sam hough who has studied this for 5 or so years, the male black hawk returns to page springs every year on feb 20th (this year it arrived on 19th).
3. more interesting is that no other black hawk gets reported for about 2 weeks after that, not even in se az.
4. so this black hawk has it's migration set 2 weeks earlier than all other black hawks.
rich armstrong
928-282-3675
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24 Feb 2019, 8:21 PM,
#2
RE: page springs black hawk
I have records for this species going back more than 20 years. The trend is that arrival dates get earlier as time advances but not that they are predictable. I have a Jan 8 1994 record for Wet Beaver Cr (John Hildebrand) but for most of the 90s they first appeared at Page Spgs in the first week of March. In the 2000s this became the last half of February and since has steered somewhat earlier.
It seems at least possible that some of these observed "arrivals" are attributable to individual birds - that is, one bird who's territory includes the trout hatchery persists there for a decade and arrives as early as he deems necessary to retain that territory. Equally possible is that birds might winter on nearby private property nearby and then "appear" at the hatchery.
Finally, it is expected that birds traveling to the most distant portions of their range migrate earliest (and latest). So, we would expect COBH to arrive in the Verde prior to the low deserts.
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