WRS Survey Summary

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Route	South and East Boulder, Stearns Lake; CO (1266)
Location	Colorado, USA
Survey date	2024-02-20
Survey ID	1870

Survey Conditions

Survey Date: 2024-02-20	Start Time: 09:40:00	End Time: 13:10:00
Temperature	15 (C)	19 (C)
Cloud Cover	5 (%)	25 (%)
Visibility	18 (km)	18 (km)
Precipitation	0: None	0: None
Wind Speed	4: 20-28 km/h (13-18 mph)	2: 6-11 km/h (4-7 mph)
Wind Direction	W	W
Water	Open	Open
Snow Depth	0 (in)	0 (in)
Observer 1	Ajit Antony
Observer 2	Liza Antony
Observer 3
Observer 4
Notes	This was a very peculiar Winter Raptor Survey in that we had only about a third of the number of raptors were usually see on this route. This is the lowest number of raptors for this survey, and we have done 5 others, both last season and this. The night before, the forecast for Boulder county predicted 21-25 mph winds with gusts to 48 mph, and there was the same forecast early morning. We wondered whether to cancel the survey, but looking up Boulder (the city) the forecast was only 14-16 mph winds with gusts to 25 mph. We decided that we could start and if there were no raptors we could abort the survey. It took us 45 minutes to see the 1st raptor, where normally we would see 1-2 within the first 5 minutes! During the first 45 minutes when we didn't see any raptors we kept wondering with her to abort the survey, checking the wind in case that was the problem and most of the time we had only light to moderate winds perhaps 8-10 mph. At other times during the day there were only Level 2 winds. We had no kestrel,and no Ferruginous Hawk for the day. The only good part about the survey is that it only took me 40 minutes to enter the data, where with the large number of raptors we usually see, it takes me 2-2.5 hours to complete the report!

Survey Sightings

Species	Time	Count	Behavior	Morph	Age	Sex	Habitat
BE (Bald Eagle)	10:30:00	1	Soaring		Immature		•wetland/pond/marsh/riparian

RT (Red-tailed Hawk)	10:35:00	1	Soaring

RT (Red-tailed Hawk)	10:50:00	1	Soaring

BE (Bald Eagle)	10:55:00	1	Perched		Adult		•wetland/pond/marsh/riparian•grassland

RT (Red-tailed Hawk)	11:55:00	1	Soaring

RT (Red-tailed Hawk)	12:20:00	1	Flying Perched	Light	Adult		•wetland/pond/marsh/riparian•grassland•shrubland

RT (Red-tailed Hawk)	12:25:00	1	Soaring	Light	Adult

RT (Red-tailed Hawk)	12:25:00	1	Perched	Light	Adult	Female	•grassland•developed•roadsides

RT (Red-tailed Hawk)	12:25:00	1	Flying Perched	Light	Adult	Male	•grassland•developed•roadsides

RT (Red-tailed Hawk)	12:30:00	1	Perched	Light			•grassland•shrubland

RT (Red-tailed Hawk)	12:30:00	1	Flying	Light			•shrubland•grassland•shrubland

RT (Red-tailed Hawk)	12:40:00	1	Perched				•grassland

RT (Red-tailed Hawk)	12:50:00	1	Flying				•roadsides•developed

RT (Red-tailed Hawk)	13:00:00	1	Perched	Light	Adult		•roadsides•developed•grassland

RT (Red-tailed Hawk)	13:05:00	1	Flying Perched	Light			•roadsides•grassland•developed

BE (Bald Eagle)	13:10:00	1	Perched		Immature		•roadsides•grassland

Survey totals by species

Species	Total Count
BE (Bald Eagle)	3
RT (Red-tailed Hawk)	13
Total	16