Here's what Birds of North America Online says for roosting behavior in Snow Bunting: ******* Sleeping, Roosting, Sunbathing In winter, roosts in slight scrapes in snow in open areas; average distance between roosting birds 2.5 m, rarely <30 cm (Vincent and Bédard 1976). Only roosts behind snowdrifts in lee of wind when temperatures below -7°C; huddling together not observed, even under extreme conditions (Vincent and Bédard 1976). During storms, passively covered with snow; during extreme conditions (-35°C), burrows into snow (Bagg 1943). Rarely observed roosting in trees (Parmelee 1968). In early spring on breeding grounds, roosts in loose aggregations in cracks and holes on cliffs (Parmelee 1968); 50–80 birds roosted in narrow cracks of southwest-facing, exposed cliffs at 2 Greenland roosts in early spring (Meltofte 1983); after territories established, male roosts alone in crack or hole on own territory . ********
BNA has nothing specific about winter Horned Lark roosts, but I would presume they are also on the ground. Re. Lapland Longspur winter roosting: ******** Sleeping, Roosting, Sunbathing Even during continuous daylight during breeding season, males roost singly on song perch rocks for 3–5 h in the middle of the “night” (20:30–01:30 MST at Sarcpa Lake; RM); females roost at nest (Hussell 1972); during cold weather, several pairs roosted communally in grass tussocks (Watson 1957). Roosting sites during migration and winter unknown. ****** Marie Marie Read Wildlife Photography 452 Ringwood Road Freeville NY 13068 USA Phone 607-539-6608 e-mail m...@cornell.edu http://www.marieread.com http://www.agpix.com/mari ________________________________________ From: bounce-7607236-5851...@list.cornell.edu [bounce-7607236-5851...@list.cornell.edu] On Behalf Of John Greenly [j...@cornell.edu] Sent: Saturday, December 25, 2010 5:10 PM To: cayugabirds Subject: [cayugabirds-l] Rafferty Rd Stopped by Rafferty Rd late this afternoon. 2 N HARRIERS active, didn't find any owls. At 4:15 huge, spread-out flocks of HORNED LARKS and SNOW BUNTINGS came from somewhere south, flew over and appeared to be headed for the wooded area north of the Rafferty Rd fields. I counted 360, but there were already some passed by and uncountable in the distance when I got there. What sort of a place do these species tend to like for the night's roost- anybody know? --John Greenly -- Cayugabirds-L List Info: http://www.NortheastBirding.com/CayugabirdsWELCOME http://www.NortheastBirding.com/CayugabirdsRULES ARCHIVES: 1) http://www.mail-archive.com/cayugabirds-l@cornell.edu/maillist.html 2) http://birdingonthe.net/mailinglists/CAYU.html 3) http://www.surfbirds.com/birdingmail/Group/Cayugabirds Please submit your observations to eBird: http://ebird.org/content/ebird/ -- -- Cayugabirds-L List Info: http://www.NortheastBirding.com/CayugabirdsWELCOME http://www.NortheastBirding.com/CayugabirdsRULES ARCHIVES: 1) http://www.mail-archive.com/cayugabirds-l@cornell.edu/maillist.html 2) http://birdingonthe.net/mailinglists/CAYU.html 3) http://www.surfbirds.com/birdingmail/Group/Cayugabirds Please submit your observations to eBird: http://ebird.org/content/ebird/ --
