Lack of adequate food sources In particular, insect-eating birds Climate/weather Ice cover on lakes Waterbirds are forced to move south
MAMMALSINSECTS
SPRINGFALL Jan-Feb – waterfowl Mar-Apr – hawks, sparrows, blackbirds May-Jun – songbirds (warblers, vireos, thrushes, flycatchers, etc.), shorebirds *The greatest species diversity is in May Jul-Oct – shorebirds Sep – songbirds Oct-Nov – hawks, sparrows, blackbirds Nov-Dec - waterfowl
Weather – wind direction, thermals A “wave” of birds can occur with proper conditions Hormones Day length Geography Lake Erie acts as a barrier to migration Maumee River – a habitat corridor
WIND DIRECTION EFFECTS OF THERMALS – A KETTLE OF HAWKS
American Golden- Plover Nest on the Arctic tundra and winter in southern Argentina; they travel a round trip distance of some 15,000 miles
Blackpoll Warbler Blackpoll warblers nest in the spruce forests of Canada and Alaska and migrate to South America for the winter; part of their migration is non-stop for ~ miles!
Many songbirds migrate at night including thrushes, warblers, sparrows, tanagers, flycatchers, orioles, wren, etc. Safety and opportunities to feed during the day
Other birds migrate during daylight hours including ducks, shorebirds, hawks, swallows, gulls, etc.
LARGE SCALESMALL SCALE
REFUELING, RESTING
Wood County areas County parks (e.g. Baldwin Woods) BG parks (e.g. Wintergarden) Maumee River corridor Oak Openings Region Western Lake Erie Marshes Magee Marsh Ottawa National Wildlife Refuge Metzger Marsh Maumee Bay State Park