During a 90 minute visit to Cromwell Valley Park today I saw a small number of hawks 
migrating in a NE direction. Of particular interest was the behavior of the local Red-tailed 
Hawks as they escorted the migrant Red-tails off their territory. Those RTs that fly very 
high and steadily north are not bothered with, but those RTs which fly too low and linger are 
quickly met by one, and sometimes both, local (breeding) RTs. Flying above the intruder 
and letting its talons dangle was enough today, but sometimes more aggressive displays 
are seen, especially early in the breeding season.
Also noteworthy was a pair of Coopers Hawks performing mutual soaring, diving and foot- 
touching aerial displays. The size difference was apparent as the smaller male dove at the 
larger female.
One Osprey was seen flying very high, and two Northern Harriers were seen, including an 
adult male.
All this was observed between 3:00 pm and 4:30 pm.
Mid-April should bring large numbers of Broad-winged Hawks into the region, and we will 
probably conduct an official Hawk Count for the HAWK MIGRATION ASSOCIATION of NORTH 
AMERICA on April 14th and 15th at C.V.P.

Jim Meyers
Parkville  Md.